Why we sometimes see the moon and the sun at the same time.
A million miles from Earth, the James Webb Space Telescope will provide an unprecedented view of the early universe.
New research looks at how dust storms and a thin atmosphere may play into alternative energy sources on the Red Planet.
Understanding these ancient objects that sometimes produce cometlike tails may help explain how the solar system formed.
New research suggests gamma rays stunt plant growth.
We can't put Earth on a scale, but there are other ways to figure out the weight of our world.
Sunscreen and calcium supplements aren't enough to protect Mars-bound space travelers from radiation and a lack of gravity in outer space.
The four-year process of casting the sixth of seven primary mirrors for the Giant Magellan Telescope began this month.
Researchers and Aboriginal people are working to protect 3.5-billion-year-old stromatolite fossils in western Australia.
Miniature aircraft, powered by light, might offer new ways to explore the atmosphere of Earth -- or other planets.
Experiments reveal electrical sparks might light up the raging dust storms on Mars.
How’s the weather up there? Even for exoplanets that are many light-years away, astronomers can learn about their atmospheres.