Category: Planetary Science
Condensation defying gravity
Experiment viewed from above. Credit: European Space Agency From dew at dawn to a foggy mirror after a shower, condensation is part of our daily lives on Earth. In space,…
3 billion-year-old white dwarf still consuming its planetary system challenges previous assumptions
Credit: Space Telescope Science Institute In approximately 5 billion years, the sun will deplete its hydrogen fuel and collapse under its own gravity, becoming a white dwarf. Though Earth-sized, this…
Sentinel-4 offers first glimpses of air pollutants
First image of nitrogen dioxide from Sentinel-4, depicting tropospheric nitrogen dioxide with clear pollution hotspots visible along the Mediterranean coast and over Italy’s Po Valley. Credit: modified Copernicus Sentinel data…
What happened to those ‘little red dots’ Webb observed?
Images of little red dots seen in several deep-sky surveys of JWST. Credit: ASA/ESA/CSA/STScI/Dale Kocevski (Colby College) When the James Webb Space Telescope (JWST) began operations, one of its earliest…
How we sharpened the James Webb telescope’s vision from a million kilometers away
A ‘selfie’ taken during Webb’s testing on Earth. Credit: Ball Aerospace After Christmas dinner in 2021, our family was glued to the television, watching the nail-biting launch of NASA’s US$10…
Researchers’ autonomous system makes it easier to transport cargo on the moon
PhD student Alec Krawciw, left, and Professor Tim Barfoot stand beside the Canadian Space Agency’s Lunar Exploration Light Rover after a field trial in 2024. Credit: Tim Barfoot Autonomy algorithms…
Two green comets shine bright. How to spot them in the night sky
This image provided by Brennan Gilmore shows the bright green comet C/2025 A6 (Lemmon) on Saturday, Oct. 4, 2025, in Cismont, Va. Credit: Brennan Gilmore via AP Two bright green…
