One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

What can 3I/ATLAS teach astronomers about the origins of life?

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

Vera C. Rubin Observatory discoveries announced at this week’s AAS 248 include 380 trans-Neptunian objects found in six weeks ...

What is Planet Nine, and where is it? The question has fascinated astronomers for years. Scientists believe a massive undiscovered planet may exist in the outer Solar System. Although no telescope has ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Flybys of Jupiter ...

For the first time, scientists have taken near-daily measurements of the Sun's global coronal magnetic field, a region of the Sun that has only been observed irregularly in the past. The resulting ...

16 Psyche the large metallic asteroid ideal for space mining. NASA imagery was used for this composite from https://solarsystem.nasa.gov/asteroids-comets-and-meteors ...

Astronomers say interstellar comet 3I/ATLAS may be up to 12 billion years old, making it far older than the Solar System. New ...