If humanity ever leaves the solar system, it will not be for curiosity alone. It will be because survival demands it. Proxima ...

This is the story of our cosmic neighborhood's front row. We explore the four rocky planets forged in the sun's heat: shrinking Mercury, the scorching runaway greenhouse of Venus, Earth's ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

Highlights from a cometary trio that captured our imaginations. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. 2025 has seen stargazers look on ...

The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

The Ursid meteor shower, which marks the final celestial event of the year, will peak between Sunday night and early Monday morning. Sky-gazers can expect to see five to 10 meteors per hour between ...

SALT LAKE CITY — The Ursid meteor shower, which marks the final celestial event of the year, will peak between Sunday night and early Monday morning. Sky-gazers can expect to see five to 10 meteors ...

Here's how to see the Ursid meteor shower, which peaks in dark skies close to a new moon this year. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

KEY OBSERVATIONS The first alert came quietly. The data did not look wrong—just unfamiliar. What followed has forced ...

The sun’s outer atmosphere resembles a pufferfish.

Supporters of planetary colonization argue that becoming a multi-planet species could safeguard us from potentially ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...