It was big news years ago when Mars orbiters found streaks of what appeared to be water running down Martian cliffs and ...

During a surprise aurora storm, a bright white streak lit the US sky, puzzling many. It was traced back to a Chinese rocket ...

On Saturday evening, a mysterious streak of bright light in the night sky caught the attention of some local residents as it ...

Social media users across the Southwest, including in Arizona, shared photos of a mysterious beam of light in the sky on the ...

But while we couldn’t see the sun from the ground, satellites peering down from space captured something remarkable—dark streaks stretching ... on the horizon, its light slicing across the ...

One of the longest-standing mysteries about Mars has been the presence of dark and light streaks on the rolling hills surrounding Olympus Mons. This week's image, from the European Space Agency, shows ...

Stargazers across the US have been baffled by a mysterious beam of light streaking through the sky. Around midnight on Saturday, May 17, a glowing streak was visible above the US as far south as ...

Slope streaks once believed to be signs of water on Mars might really be signs of rockfall and high winds, a new study says.

After the sun dips below the horizon, some places around the world begin to light up. These spots come alive with soft glows and nature-made (or human-made) light shows. Check out our top picks for ...