NASA Webb Telescope on Twitter: "7. If you answered “redshift," you are right! Cosmological redshift refers to how light stretches into longer, "redder" wavelengths as the universe expands. Download this infographic: https://t.co/P6DuvQgSKw… https://t.co/SjKppXeq9T"

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

Tomorrow is #WorldEmojiDay! We’d like you to guess some Webb-themed emojis and tell us what they are in the comments below We'll reveal the answers soon!pic.twitter.com/LQuD8xHESe

Graphic with "Webb Emoji Quiz" title at the top. The 8 questions below are: 1. A spiderweb emoji followed by a telescope emoji. This is a 4 letter word followed by 9 letter word. 2. A sun emoji and shield emoji. 9 letter word. 3. An X emoji, O emoji, and Earth emoji. 9 letters. 4. A black circle emoji and a hole emoji. This is a 5 letter word, then a 4 letter word. 5. An asteroid emoji followed by a karate black belt emoji. 8 letter word followed by a 4 letter word. 6. A satellite emoji followed by a bus emoji. 10 letter word then a 3 letter word. 7. A red circle emoji and then an arrow pointing right emoji. 8 letters. 8. A rainbow emoji and a graph emoji. 12 letters.

19 replies 62 retweets 329 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

1. The first answer is “Webb telescope”! That’s us — the largest and most powerful space observatory ever built. Webb will look back to about 13.6 billion years ago, observing the first stars, galaxies and more. Latest milestones: http://go.nasa.gov/3ihiquc pic.twitter.com/6doygwcCHa

Close-up image of the James Webb Space Telescope's gold-coated, honeycomb-like primary mirror in a fully unfolded state.

3 replies 10 retweets 93 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

2. It’s “sunshield”! The sunshield is a 5-layer, tennis court-sized structure that will always protect Webb's sensitive mirrors & instruments from the heat/light of the Sun, Earth and Moon. More: https://jwst.nasa.gov/content/observatory/sunshield.html …pic.twitter.com/KSAi6GDUdT

The James Webb Space Telescope displaying its fully unfolded, silver metallic sunshield. The sunshield's 5 layers are visibly separated. Technicians in cleanroom suits stand on orange cranes to the left.

1 reply 5 retweets 58 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

3. This one is “exoplanet.” Webb will be able to study exoplanet atmospheres by breaking down light to learn more about the gases present. More: https://go.nasa.gov/2v3pupB pic.twitter.com/jK1pnavhfZ

Artist conception of the 7 rocky exoplanets within the TRAPPIST-1 planetary system, located 40 light-years from Earth.

3 replies 13 retweets 66 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

4. Yep, it’s “black hole”! Webb’s infrared vision will be able to pierce through the dust surrounding the cores of galaxies, shedding light on the mysteries of supermassive black holes: https://go.nasa.gov/3m1mnoe pic.twitter.com/IghCdjReET

This artist concept illustrates a supermassive black hole with millions to billions times the mass of our Sun. Supermassive black holes are enormously dense objects buried at the hearts of galaxies.

2 replies 15 retweets 81 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

5. The answer is the main “asteroid belt” — a huge cluster of asteroids between Mars and Jupiter. Webb will examine the composition of multiple asteroids within the belt to learn more about the history of our Solar System: https://go.nasa.gov/3rdPGH1 pic.twitter.com/CHlRkx5l5F

Artist illustration showing the main asteroid belt, located between Mars and Jupiter within our solar system

3 replies 6 retweets 66 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

6. It’s “spacecraft bus,” one of Webb’s major components. This structure handles things such as steering the observatory, sending & receiving data from Earth, and converting sunlight into power: https://go.nasa.gov/3hMtYqx pic.twitter.com/aCnbCjPBPu

Labeled diagram of the James Webb Space Telescope. The Science Instrument Module (ISIM) houses all of Webb's cameras and science instruments and is found behind the mirrors. The primary mirror is made up of 18 hexagonal segments made of beryllium and coated with gold to capture faint infrared light. The secondary mirror is extended in front of the primary mirror, and together they form the Optical Telescope Element (OTE). The multilayer sunshield has five layers to shield the observatory from the light and heat of the Sun and Earth. Underneath the sunshield are star trackers (small telescopes that use star patterns to target the observatory), the spacecraft bus (which contains most of the spacecraft steering and control machinery, including the computer and the reaction wheels), the Earth-pointing antenna (which sends science data back to Earth and receives commands from the Deep Space Network), and the solar array. A trim flap also helps stabilize the satellite.

4 replies 11 retweets 82 likes

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NASA Webb Telescope‏Verified account @NASAWebb Jul 16

7. If you answered “redshift," you are right! Cosmological redshift refers to how light stretches into longer, "redder" wavelengths as the universe expands. Download this infographic: https://bit.ly/3hM1xZS pic.twitter.com/2hm5wfR6YX

Detailed infographic. Title: What is Cosmological Redshift? Text of first section: When Space Expands, Light Stretches. Since the Big Bang, the physical space of the universe has been expanding. Stars and galaxies maintain their size, but the space between them grows. As light travels through expanding space, it is stretched to longer wavelengths. Text of second section: Redder Than Red. The longest visible wavelength is red. Beyond red are longer wavelengths that we can’t see, starting with infrared. When light is stretched by the expansion of space, we say that it is redshifted from its original wavelength to a longer, redder one. Text of third section: Seeing the Past. Telescopes with infrared detectors allow us to see the ancient light of the first galaxies, which has been redshifted over space and time. Third section's visualization compares how far back in time the Hubble Space Telescope can see compared to the Webb Telescope, which can peer at the first galaxies and first stars.

1:41 PM - 16 Jul 2021

8 Retweets
88 Likes

4 replies 8 retweets 88 likes

1. M. Fautneddy‏ @fautneddy Jul 16
  Replying to @NASAWebb
  
  SHR
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1. Zach Burnett‏ @zrb_umd Jul 16
  Replying to @NASAWebb
  
  How far back in z will Webb be able to reasonably resolve? At what point in z does all the interesting visual / UV come into Webb’s spectral range?
  Thanks. Twitter will use this to make your timeline better. Undo
  
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