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Webb Telescope launch December 25: Success!
NASA now says that - due to adverse weather - the Webb Telescope will launch no earlier than Christmas Day, December 25.
December 25, 2021
Possible fossil spiral arms in our Milky Way
A team of scientists using Gaia data have examined filamentary threads in the disk of the Milky Way and think they might be fossil spiral arms.
December 24, 2021
Scientists find water in Mars’ Grand Canyon
A spacecraft orbiting Mars has made the unexpected discovery of water in Mars' Grand Canyon, otherwise known as Valles Marineris.
December 24, 2021
Top 10 stories of 2021 from EarthSky
The top 10 stories of 2021 is a review of what we've learned in the past year from our home planet, Earth, out to the vast universe.
December 23, 2021
EarthSky’s top photos from 2021
Enjoy EarthSky's top photos from 2021. All these photos were taken by members of the EarthSky community from all around the globe.
December 23, 2021
A Mars-sized exoplanet, like Mercury inside
Astronomers have found a nearby, blazing hot, Mars-sized exoplanet. It's like Mercury in composition and orbits its star in only 7.7 hours.
December 20, 2021
Seeking Europa’s water plumes with Clipper
Are Europa's water plumes real? NASA's Europa Clipper will launch in 2024 to visit this moon to answer this and other questions about its subsurface ocean.
December 19, 2021
5 weird things that happen in outer space
Here are 5 weird things that happen in outer space: the state of plasma, extreme temperatures, cosmic alchemy, magnetic explosions and supersonic shocks.
December 16, 2021
Dark matter missing from 6 galaxies
Astronomers completed a 40-hour long observation of an ultra-diffuse dwarf galaxy and discovered no traces of dark matter.
December 15, 2021
Hundreds of new exoplanets from Kepler data
Scientists have found hundreds of new exoplanets in data from the Kepler mission. These include 301 new confirmed exoplanets and 366 new planetary candidates.
December 13, 2021
