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Karla Segura Ch.

@CRKARLA

Ad astra! I tweet all about science, English and Spanish. Also, Environment and Social Causes. My Motto: Work Hard and Stay Focused! Usually post in EDT!

Costa RicaBorn November 10Joined July 2009

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5,531 Followers

Karla Segura Ch.’s Tweets

Karla Segura Ch. Retweeted

NASA

@NASA

Mar 9

What are future

@NASA_Astronauts

planning to wear on the first mission to the Moon’s South Pole? NASA and

@Axiom_Space

will reveal the new #Artemis III spacesuit prototype on Wednesday, March 15. Don’t miss it: go.nasa.gov/3YBjcFI

A close-up view of an astronaut's bootprint in the lunar soil, photographed with a 70mm lunar surface camera during the Apollo 11 extravehicular activity (EVA) on the moon. While astronauts Neil A. Armstrong, commander, and Edwin E. Aldrin Jr., lunar module pilot, descended in the Lunar Module (LM) "Eagle" to explore the Sea of Tranquility region of the moon, astronaut Michael Collins, command module pilot, remained with the Command and Service Modules (CSM) "Columbia" in lunar orbit. Credits: NASA

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Hubble

@NASAHubble

Feb 3

Welcome to a "star factory"! This #HubbleFriday view shows the Tarantula Nebula, the brightest region of starbirth in our galactic neighborhood. About 161,000 light-years away, it's within the Large Magellanic Cloud – a satellite galaxy to our Milky Way: go.nasa.gov/3RsBMOh

Wispy, nebulous red clouds extend from the lower left of the image. At the top and right the dark background of space can be seen through the sparse nebula. Along the left and in the corner are many layers of brightly colored gas and dark, obscuring dust. A cluster of small, bright blue stars in the same corner expands out across the image. Many much smaller stars cover the background.

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🦉 Duo bingo:

captured a bright variable star and its smaller companion star in the upper left of this composite image. Both lie in the Orion Nebula, a colossal region of star formation roughly 1,450 light-years from Earth: go.nasa.gov/3Y9idwJ

$Two very bright stars with cross-shaped diffraction spikes are prominent: The larger is at slightly lower-right of center, the smaller lies toward the upper-left corner. Small red stars with short diffraction spikes are scattered around them. The background is covered nearly completely by gas: smoky, bright blue gas around the larger star in the center and lower-right, and wispier red gas elsewhere. Credit: ESA/Hubble & NASA, J. Bally, M. Robberto$

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NASA

@NASA

Dec 15, 2022

Our #JunoMission is turning its gaze to Jupiter’s volcanic moon, Io. Juno is expected to complete nine flybys of the Jovian moon, observing how volcanoes interact with Jupiter's aurorae and magnetosphere. go.nasa.gov/3FVXRR0

Cyclone storms on Jupiter swirl in blue, grey, tan, and white. Image data: NASA/JPL-Caltech/SwRI/MSSS Image processing: Navaneeth Krishnan S CC BY 3.0

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NASA Webb Telescope

@NASAWebb

Dec 1, 2022

A Titan-ic success! Here is Webb’s first look at Saturn’s largest moon, Titan. Because Titan has a dense atmosphere, its surface is hidden in visible light. Enter Webb’s infrared eye, which captured clouds as well as bright & dark patches on its surface: go.nasa.gov/3FijpXN

Side-by-side images of Saturn’s moon Titan, captured by Webb’s Near-Infrared Camera on November 4, 2022. Left image labeled “lower atmosphere and clouds” is various shades of red, from nearly black to nearly white. Three bright spots are labeled. Spot along the edge at 11 o’clock is labeled “Cloud A.” A larger, brighter spot at 1 o’clock is labeled “Cloud B.” A nearly white, crescent-shaped spot along the bottom from about 5 to 7 o’clock is labeled “Atmospheric Haze.” Right image labeled “atmosphere and surface,” is shades of white, blue, and brown. Clouds A and B are bright spots in the same locations as in the left-hand image. Cloud A, at 11 o’clock, is quite small and subtle. Cloud B, at 1 o’clock, is brighter and appears larger than in the left-hand image. Three surface features are labeled: Dark patch near Cloud A labeled “Kraken Mare.” Dark patch in middle lower right quadrant labeled “Belet.” Bright patch just inside the edge at about 4 o’clock labeled “Adiri.”

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We're working with

to plan one of the most ambitious feats ever attempted in space—bringing a Mars sample to Earth. The Mars Sample Return campaign could help answer a question rovers alone cannot: Was there life on Mars? Here's how we plan to do it: mars.nasa.gov/msr/

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NASA Webb Telescope

@NASAWebb

Nov 17, 2022

"This is a whole new chapter in astronomy." Webb researchers found 2 early galaxies, one of which may contain the most distant starlight ever seen. These 2 unexpectedly bright galaxies could fundamentally alter what we know about the very first stars: go.nasa.gov/3XdhoDa

Countless glowing galaxies of all shapes and sizes speckle the black backdrop of space. Some are spiral, some more disk-shaped and others spherical. Farther galaxies are only seen as dots. Their colors include blue, pink, orange, and white. Towards the center left, a red dot of a galaxy, along with some surrounding streaks of galaxies, are framed in a tiny white box. This box is attached to a close-up view in a much larger inset box. The red dot is a never-before-seen primordial galaxy discovered by Webb, thought to have existed 350 million years after the big bang.

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$Large, bright white stars with long diffraction spikes are seen among countless glowing galaxies of all shapes and sizes against the black backdrop of space. Some galaxies are spiral, some more disk-shaped and others spherical. Farther galaxies are only seen as dots. Their colors include blue, pink, orange, and white. Towards the bottom left, a small reddish disk is framed in a tiny white box. This box is attached to a close-up view in a much larger inset box. This red disk is a never-before-seen primordial galaxy discovered by Webb, thought to have existed 450 million years after the big bang.]$

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NASA

@NASA

Nov 19, 2022

Just days from reaching the Moon, the

@NASA_Orion

spacecraft captured this selfie while flying through space. The #Artemis I mission is preparing us to bring astronauts to the Moon. go.nasa.gov/3TQ8BUX

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NASA

@NASA

Oct 19, 2022

See the Pillars of Creation like never before! First made famous by

@NASAHubble

in 1995,

@NASAWebb

revisited this iconic part of the Eagle Nebula, revealing new details and hidden stars: go.nasa.gov/3Da98fe

This Webb image of the “Pillars of Creation” has layers of semi-opaque, rusty red gas and dust that start at the bottom left and go toward the top right. There are three prominent pillars rising toward the top right. The left pillar is the largest and widest. The peaks of the second and third pillars are set off in darker shades of brown and have red outlines. Peeking through the layers of gas and dust is the background, set in shades of blue and littered with tiny yellow and blue stars. Many of the tips of the pillars appear tinged with what looks like lava. There are also tiny red dots at the edges of the pillars, which are newly born stars.

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Star Wars

@starwars

Sep 10, 2022

“You are a Mandalorian no more.” The new season of #TheMandalorian starts streaming in 2023 on

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NASA

@NASA

Sep 6, 2022

This Webb caught a giant space tarantula! 🕸️ Take a moment to stare into thousands of never-before-seen young stars in the Tarantula Nebula.

@NASAWebb

reveals details of the structure and composition of the nebula, as well as background galaxies: go.nasa.gov/3RD7Ldt

Fluffy tan-colored nebula clouds, with rust-colored highlights, surround a black central area. Within that area, the focal point of the image is one large yellow star with eight long thin points. To the right of this star is a bright star cluster in an oval shape. The stars within the cluster look like tiny pale blue sparkles. The cluster is more densely packed at its core and scatters outward. Towards the bottom of the image, multiple arms appear to spiral out of a cloudy tan knob. Taken together, the structures resemble a spider or a squid. Other blue and yellow eight-pointed stars, as well as distant galaxies, are dotted throughout the image. Credits: NASA, ESA, CSA, STScI, Webb ERO Production Team

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NASA

@NASA

Sep 1, 2022

Baby’s first exoplanet capture. 🍼

@NASAWebb

took its first direct image of a planet outside of our solar system, roughly six to 12 times the mass of Jupiter. Peek into future possibilities of studying distant worlds with Webb: go.nasa.gov/3RptBBH

$The star HIP 65426 & 4 views of its planet “b.” The background (Digitized Sky survey) image is black with white & blue stars. Star HIP 65426 is labeled at top center. It has 4 diffraction spikes (telescope artifacts) at the top, bottom, left, & right. Diagonal lines down from the star to the bottom of the image highlight 4 inset boxes. From L to R, 1st is Webb’s NIRCam view of the exoplanet. It's a purple dot with purple bars at 11 & 5 o’clock. The bars are telescope artifacts, not physically present. The planet & artifacts have been colored purple. The filter label says: F300M (3 micrometers). Next is a similar NIRCam view using filter F444W (4.44 micrometers), colored blue & with artifact bars. Next is a MIRI view, colored orange. No bars are present. The filter is F1140C (11.40 micrometers). Last, a MIRI view (a large red dot) with filter F1550C (15.50 micrometers). A white star icon on all 4 images represents the parent star.$

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NASA Webb Telescope

@NASAWebb

Aug 30, 2022

Feast your eyes on the beautiful spiral structure of the Phantom Galaxy, M74, as seen by Webb in the mid-infrared. Delicate filaments of dust and gas wind outwards from the center of the galaxy, which has a ring of star formation around its nucleus. esawebb.org/images/potm220

Image of the Phantom Galaxy, or M74, as seen by Webb in mid-infrared light. Delicate gray, webby filaments form a spiral pattern winding outwards from the center of the galaxy. These spiral arms of the galaxy are traced by blue and bursts of pink, which are the regions in which stars are forming. The very heart of the galaxy is colored blue and has speckles, which are young stars forming around the nucleus of the galaxy.

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NASA

@NASA

Aug 30, 2022

We're now targeting Saturday, Sept. 3 for the launch of the #Artemis I flight test around the Moon. The two-hour launch window opens at 2:17 p.m. ET (18:17 UTC).

The Space Launch System rocket stands upright on the launchpad. The background is the sky dominated by puffy cumulus clouds. The rocket has an orange central fuel tank with two white rocket boosters on either side. The boosters have the word NASA painted vertically on them in red in the iconic "NASA Worm" typeface. The typeface resembles a worm. Photo credit: NASA/Joel Kowsky

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NASA

@NASA

Aug 24, 2022

We are ready. 🚀 The uncrewed #Artemis I mission around the Moon will pave the way for future astronauts. The Artemis Generation is about to leave its mark. On Aug. 29, watch history with us: go.nasa.gov/3pFlV1V

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NASA

@NASA

Jul 13, 2022

ICYMI: Yesterday, the world got its first look at the full capabilities of the world's most powerful space telescope. Relive highlights from the

@NASAWebb

live event at

@NASAGoddard

: go.nasa.gov/3nXn8k7 #UnfoldTheUniverse

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NASA

@NASA

Jul 12, 2022

Take Five: Captured in exquisite detail,

@NASAWebb

peered through the thick dust of Stephan’s Quintet, a galaxy cluster showing huge shockwaves and tidal tails. This is a front-row seat to galactic evolution: nasa.gov/webbfirstimages #UnfoldTheUniverse

$A group of five galaxies that appear close to each other in the sky: two in the middle, one toward the top, one to the upper left, and one toward the bottom. Four of the five appear to be touching. One is somewhat separated. In the image, the galaxies are large relative to the hundreds of much smaller (more distant) galaxies in the background. All five galaxies have bright white cores. Each has a slightly different size, shape, structure, and coloring. Scattered across the image, in front of the galaxies are number of foreground stars with diffraction spikes: bright white points, each with eight bright lines radiating out from the center.$

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NASA

@NASA

Jul 12, 2022

Cosmic cliffs & a sea of stars.

@NASAWebb

reveals baby stars in the Carina Nebula, where ultraviolet radiation and stellar winds shape colossal walls of dust and gas. nasa.gov/webbfirstimages #UnfoldTheUniverse

$The image is divided horizontally by an undulating line between a cloudscape forming a nebula along the bottom portion and a comparatively clear upper portion. Speckled across both portions is a starfield, showing innumerable stars of many sizes. The smallest of these are small, distant, and faint points of light. The largest of these appear larger, closer, brighter, and more fully resolved with 8-point diffraction spikes. The upper portion of the image is blueish, and has wispy translucent cloud-like streaks rising from the nebula below. The orangish cloudy formation in the bottom half varies in density and ranges from translucent to opaque. The stars vary in color, the majority of which, have a blue or orange hue. The cloud-like structure of the nebula contains ridges, peaks, and valleys – an appearance very similar to a mountain range. Three long diffraction spikes from the top right edge of the image suggest the presence of a large star just out of view.$

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NASA's Perseverance Mars Rover

@NASAPersevere

May 19, 2022

I’m headed westward, skirting the lower part of the river delta on the lookout for good rock targets for #SamplingMars. Soon, I may get my first real taste of the delta. More on my sampling strategy in this week’s blog: go.nasa.gov/3sO31I6

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NASA

@NASA

May 12, 2022

Have you seen the picture of the black hole at the center of our galaxy? The image of Sagittarius A* (inset) was taken by

@EHTelescope

. Now see it in context with support from our

@ChandraXray

, Swift and NuSTAR observatories. Here's what the colors mean: go.nasa.gov/3yya5vX

Composite image of the supermassive black hole at the center of our Milky Way galaxy. Pointing to the middle of the main image is an inset image of the region around the “event horizon."

In the main image, golden orange specks of light and tendrils of neon purple and blue clouds are set against a black background. Oranges and purples were captured in infrared light by NASA’s Hubble Space Telescope. The blues represent data from NASA’s Chandra X-ray Observatory. At the heart of the main image are several bright white dots, including one that contains the supermassive black hole at the center of our galaxy, known as Sagittarius A*.

Emerging from this bright white dot is an inset image, housed at upper right. The image is from the Event Horizon Telescope. It shows a bright, orange ring with three golden yellow spots and red aura. This is gas around the event horizon of the galaxy’s supermassive black hole. The bright ring is formed by light bending in the black hole's intense gravity.

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NASA

@NASA

May 11, 2022

Hello, world! First-light images from

@NOAA

's GOES-18 weather satellite reveal our home planet in high resolution. We oversaw development and launch of this mission, which will provide data to improve weather forecasts, and monitor our changing climate: nasa.gov/goes

Full disc image of Earth's Western Hemisphere by GOES-18 satellite. North and South America are clearly visible, with streaks of white clouds across the oceans and landmasses. Mexico appears brown and arid while Brazil is lush and green.

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NASA

@NASA

Nov 24, 2021

That’s a wrap for our #DARTMission launch coverage, but there’s plenty more news to come! Stay tuned to NASA,

@AsteroidWatch

, and

@JHUAPL

social media for the latest updates on DART's journey on its way to asteroid Dimorphos in late 2022.

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NASA

@NASA

Nov 16, 2021

From darkness, light. Dark nebulae are clouds of gas and dust that block visible light coming from behind them. But astronomers think these dense pockets of darkness might house nurseries for newborn stars, as seen in this

@NASAHubble

image: go.nasa.gov/3oyO4GF

Dark patch of universe with a corner of bright orange and white light peeking out. Stars dot the background.

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NASA's Perseverance Mars Rover

@NASAPersevere

Nov 15, 2021

Martian weather is still a mystery but to help scientists better understand it, I use my Mars Environmental Dynamics Analyzer (MEDA) to measure factors such as humidity and wind speed, as well as the amount and size of dust particles in the atmosphere. go.nasa.gov/3D41OiG

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NASA Solar System

@NASASolarSystem

Oct 14, 2021

The #LucyMission will explore asteroids that share an orbit with Jupiter, but the spacecraft won't visit the giant planet itself. However, on Oct. 16 – the very same day that Lucy launches – our #JunoMission will make another of its close passes low over Jupiter's cloud tops. 1/4

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NASA

@NASA

Sep 23, 2021

🚀 What's the next big thing in space? We're supporting early-stage research into futuristic

@NASA_Technology

concepts, like metamaterial structures small enough to fit in a rocket that can expand to over a kilometer in size: go.nasa.gov/2XLv7rd

Illustration of high-expansion-ratio auxetic structure expanding in orbit

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NASA

@NASA

Aug 26, 2021

✅ Milestone achieved: Our

@NASAWebb

Space Telescope has completed testing and is being prepared for shipping to its

@ESA

Spaceport launch site in French Guiana. Watch this time-lapse of the spacecraft being stowed for shipping: go.nasa.gov/2UOUbvM

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NASA's Perseverance Mars Rover

@NASAPersevere

Aug 26, 2021

The rocks on top of this ridge have been sitting here getting sandblasted by Mars winds for eons. This one looks like a good, solid target for my next drilling effort. Next step: abrade a small test patch. #SamplingMars Read more: go.nasa.gov/3DuOeG3

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Last year,

’s Fermi Gamma-ray Space Telescope detected a pulse of radiation that had been racing toward Earth. At only about a second, it turned out to be the shortest gamma-ray burst caused by the death of a massive star ever seen. Read more: go.nasa.gov/3zGzCQX

Illustration of jets from GRB 200826A, the shortest gamma-ray burst (magenta) from a collapsing star ever seen.

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NASA

@NASA

Jul 25, 2021

An astronomical phenomenon called gravitational lensing can warp, magnify or even duplicate the appearance of distant galaxies. 🔎 In this image,

@NASAHubble

uses this phenomenon as a natural magnifying glass to view a distant galaxy. Check it out: go.nasa.gov/2VfzxoE

The relatively nearby galaxy cluster MACSJ0138.0-2155 has lensed a significantly more distant inactive galaxy – a slumbering giant known as MRG-M0138 which has run out of the gas required to form new stars and is located 10 billion light-years away.

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SpaceX

@SpaceX

Jul 23, 2021

NASA has selected Falcon Heavy to fly Europa Clipper! Launching in October 2024, this interplanetary mission will study whether Jupiter's icy moon Europa could have conditions suitable for life. go.nasa.gov/3iGmYKV

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NASA

@NASA

Jul 10, 2021

You know what big galaxies mean? Big galaxy clusters! Two enormous galaxies are captured here by

@NASAHubble

. These galaxies are some of the thousands that make up the Perseus galaxy cluster, one of the biggest objects known in the universe. Learn more: go.nasa.gov/3hX3cua

Two enormous galaxies capture your attention in this spectacular image taken with the NASA/ESA Hubble Space Telescope using the Wide Field Camera 3 (WFC3).

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NASA

@NASA

Jun 9, 2021

After a series of instrument checks and tests, our

@NASAPersevere

Mars rover has kicked off the science phase of its mission to search for signs of ancient microbial life in Jezero Crater: go.nasa.gov/3wfHmby

Panorama of Mars, shows part of the rover.

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NASA JPL

@NASAJPL

Apr 25, 2021

Third flight in the history books✅ Our #MarsHelicopter continues to set records, flying faster and farther. The space chopper is demonstrating critical capabilities that could enable the addition of an aerial dimension to future missions to Mars & beyond. go.nasa.gov/ingenuity

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is now on TikTok! Our first video takes us to Costa Rica with Nat Geo Explorer and filmmaker Filipe DeAndrade. tiktok.com/@natgeo

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NASA's Perseverance Mars Rover

@NASAPersevere

Mar 3, 2021

This week I’ve been doing lots of health checkouts, getting ready to get to work. I’ve checked many tasks off my list, including instrument tests, imaging, and getting my arm moving. Warming up for a marathon of science.

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NASA's Perseverance Mars Rover

@NASAPersevere

Feb 20, 2021

Ingenuity, the Mars Helicopter I carry, is working as expected. I’m currently charging it, but once I set it down, it’ll rely solely on its solar panels. If it survives the brutally cold Martian nights, the team will attempt flight. go.nasa.gov/3dtLvSm #CountdownToMars

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NASA

@NASA

Feb 19, 2021

After 203 days and 300 million miles, our

@NASAPersevere

landed on Mars at 3:55 p.m. EST on Feb. 18. After spending some time checking out its systems, it'll be rolling across the Red Planet, looking for signs of ancient Martian life. go.nasa.gov/3pF0dIY

Members of NASA’s Perseverance Mars rover team watch in mission control as the first images arrive moments after the spacecraft successfully touched down on Mars, Thursday, Feb. 18, 2021, at NASA's Jet Propulsion Laboratory in Pasadena, California. A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith. Photo Credit: (NASA/Bill Ingalls)

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Behold!

's first image after completing her #CountdownToMars:

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NASA

@NASA

Jan 28, 2021

35 years ago today, the space shuttle Challenger and all seven crew members aboard were lost. On this Day of Remembrance, we honor the Challenger crew and all who gave their lives while furthering the cause of exploration and discovery: youtu.be/CnqCWo46fzM #NASARemembers

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