Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday, Dec. 19, marking a key moment in the journey of one of the rarest visitors ever observed in
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Keeping Up with PACE: Summary of the 2025 PAC3 Meeting
Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 13 min read
Sentinel-6B Extends Global Ocean Height Record
Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 7 min read
On The Divergent Evolution Of Io And Europa As Primordial Ocean Worlds
Europa — NASA JPL source Galilean moons exhibit a decrease in bulk density with distance from Jupiter, which may reflect differences in evolutionary paths and water loss.
Mars Orbital Recon: Coprates Chasma Within Valles Marineris
Coprates Chasma — NASA HiRISE This image of Coprates Chasma shows the deepest part of the giant Valles Marineris canyon system, more than 7 kilometers below the nearest rim and
Probing Thermal Gradients Of Habitable-zone Rocky Planets Using Direct Imaging As An Anti-indicator Of A Global Surface Ocean
Surface temperature maps of our GCM simulations for different surface-atmosphere scenarios (Table 1) with 1 bar (top two rows) and 10 bar (bottom row) atmospheres. The substellar point is located
Maximizing The Sensitivity Of ELT To Habitable Worlds With A Space-based Starshade
An artist’s depiction of the fully-deployed starshade spacecraft (left) next to the spacetelescope it supports. The two spacecraft must fly in almost perfect alignment to allow thetelescope to stay in
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Fallout Season 2 is almost here, so now is the perfect time to start a little online nuclear war of our own by ranking all the Fallout games from worst
The U.S. Space Force is turning to some unlikely sources of inspiration for naming its spacecraft and space weaponry. At the 3rd Annual Spacepower Conference, held in Orlando, Florida from
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