Published in Nature Astronomy, the findings represent a first: while helium escape has been observed before, this is the ...

It is good to be back and there is plenty to explore in the December night sky. Starting on Tuesday is the comet C/2025 T1 Atlas, which makes its closest approach to the sun. There is a supermoon on ...

The dots connect, the veil lifts and what was once confusing now feels undeniable ...

Looking for a sky event this week? Check out our full Sky This Week column. November 28: Saturn stands still Mercury comes to ...

Mercury retrograde is over and won’t return until 2026. See what the shadow period means for you.