Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

On August 7, 2025, NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) mission reached a pivotal milestone by ...

Astronomers have calculated how often such black holes might be passing around the Solar System and what would happen if they did. They estimate that at least one of these objects would pass ...

Interstellar comet 3I/ATLAS shines in the sharpest view yet captured by the Hubble Space Telescope, helping astronomers ...

Astronomers using the Subaru Telescope and Canada France Hawaii Telescope on Mauna Kea discovered a “fossil” of our early solar system nicknamed “Ammonite.” This type of object is a ...

The study shows that even an 0.1 percent change to Neptune’s orbit could completely destabilize our solar system. Luckily, it won’t happen in our lifetime.

There could be a ninth planet in our Solar System after all — and no, it’s not Pluto. Instead, it’s the theoretical Planet X, also called Planet Nine, a wide-orbit planet that would circle the Sun ...