Runaway stars may create the mysterious ultraviolet glow around some galaxies
Hot blue stars kicked out of their cradles may explain a mysterious ultraviolet glow that surrounds the disks of many spiral galaxies. A new...
Dog ticks may get more of a taste for human blood as the climate changes
Climate change could turn some dog ticks into suckers for humans instead of canines. At temperatures around 38° Celsius (100° Fahrenheit), some brown dog...
Betelgeuse went dark, but didn’t go supernova. What happened?
Astrophysicist Miguel Montargès has a clear memory of the moment the stars became real places to him. He was 7 or 8 years old,...
A new treatment could restore some mobility in people paralyzed by strokes 
What has Perseverance found in two years on Mars? 
This robot automatically tucks its limbs to squeeze through spaces 
Greta Thunberg’s new book urges the world to take climate action now