The boundary of a solar system is not defined by planets, but by gravity. Beyond Pluto and the Kuiper Belt lies the Oort ...

Fact-based stories from our cosmic neighbourhood, one star or constellation at a time. Name it, navigate it, know it.

Forget what you learned in school. The solar system isn't just a flat disc of planets it's a 3D bubble moving through space. This video explains why all planets orbit in the same flat plane and what ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

Harvard's Avi Loeb reveals why interstellar visitor 3I/ATLAS could be an alien 'Trojan Horse' by design rather than a natural ...

Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles. After its brief visit Friday the interstellar object 3I/ATLAS will head back ...

Astronomers discovered the 40,000th near-Earth asteroid, taking the tally to 40,155 per NASA (as of the first week of ...

When interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, it did not become a spectacular object in the night ...

What is Comet 3I/ATLAS? Comet 3I/ATLAS is classified as an interstellar comet, meaning it formed outside of our solar system and is only passing through briefly. Composed of ice, dust, and frozen ...

NASA’s Hubble Space Telescope has captured infant planets colliding around Fomalhaut, one of the brightest stars in the night ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

"The discovery of interstellar objects over the past decade offers new opportunities for humanity to send time capsules to ...