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"So, if we’re looking for a long lease on a new home...we’ll have to travel even farther out. We’ll have to leave our solar system & brave the vast ocean of interstellar space." Cosmos: Possible Worlds by Ann Druyan @NatGeo @Cornell @NatGeoBooks #COSMOSCSI #COSMOS 1/pic.twitter.com/wQFkhfBVFb
"To ensure the long term survival of Earth-based life, we must one day venture to other solar systems." Dr. Ryan MacDonald (@MartianColonist, Research Associate, @Cornell Department of Astronomy & Carl Sagan Institute) #COSMOSCSI #COSMOS 3/
"Perhaps the most important question is one of the simplest: where should we go? In the last 30 yrs we have developed the technology to discover planets around other stars, exoplanets, with over 4,000 detected to date."
Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 4/pic.twitter.com/ZGWC4pb90N
"As we speak, @NASA's TESS satellite is scanning the sky looking for planets around the nearest, brightest, stars." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 5/pic.twitter.com/ayimoXs0Aw
"One of the most startling discoveries is that exoplanets in the habitable zone, at the right distance to support liquid water, are common in our galaxy - perhaps 20% of stars have an Earth-like planet in their habitable zone." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI 6/pic.twitter.com/lhCt5B66HV
"So there are no shortage of possible destinations. Once an exoplanet is found, we can study its atmosphere to decide if it would be a hospitable destination for future explorers." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI 7/pic.twitter.com/PNeSBPrpLd
"Here at the Carl Sagan Institute (@CSInst), we use telescopes on the ground and in space to observe the characteristic chemical fingerprints of different gases to learn what these worlds are like." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 8/pic.twitter.com/OBUsx9FGE5
"Using telescopes such as Hubble, we can currently study the atmospheres of gas giant exoplanets - we have even managed to detect water vapour in over 10 planets." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 9/pic.twitter.com/22uMDGFQDU
"With the upcoming launch of the James Webb Space Telescope in 2021, we will finally be able study rocky planets in exquisite detail. We may even spot telltale signs of life on these exoplanets." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 10/pic.twitter.com/Ox6L5Mx0qQ
"Though even the nearest of these worlds is staggeringly far, over 100,000 times the distance from Earth to Mars, we are already taking our first steps to one day cross the void to these distant worlds." Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 11/pic.twitter.com/zuLNcStCW6
“To all those that dream of distant worlds, know this: we will cross that ocean, we will voyage to the stars.” Dr. Ryan MacDonald (@MartianColonist) #COSMOSCSI #COSMOS 12/pic.twitter.com/JpM59P6p1s
Dr. Ryan J. MacDonald (@MartianColonist) is a theoretical astrophysicist researching exoplanet atmospheres. He is also an active science communicator & strong advocate for widening involvement in STEM education & research.
More info: https://distantworlds.space/
#COSMOSCSI 13/13pic.twitter.com/vvvR65wSvF
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