What could be the brightest comet of the year is set to pass by Earth this week. The comet, formally known as C/2025 R3 ...

Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. (CNN) — The Hubble Space Telescope and ...

Billions of years ago, Earth was an uninhabitable rock covered in magma. Scientists are still working to decipher the tale of how it transformed into a blue and green orb teeming with life. However, ...

Comet C/2025 R3 (PanSTARRS) could be visible to the naked eye in the predawn sky after April 13 as it makes a close approach ...

The cosmos has taken up its fair share of space in the news this year. Here are some of the major stories from beyond Earth that happened during 2025. Jeff Bezos’ Blue Origin completed its first ...