Astronomers have announced a giant comet coming from the Oort Cloud, the true edge of the solar system. This documentary explores its size, path, and mystery.

ESA’s Mars orbiters have observed comet 3I/ATLAS, only the third interstellar comet ever discovered. The faint, distant ...

The comets A6 (Lemmon) and R2 (SWAN) are visitors from the chilly fringes of our solar system, and could even be visible at ...

What lies beyond Neptune? Is it just empty space… or something far more mysterious? In this video, we explore the fascinating story of the Oort Cloud – a gigantic, icy sphere that surrounds our Solar ...

Comet SWAN will make its closest approach to Earth — coming within 24 million miles of us — on October 20, while comet Lemmon ...

Comet C/2025 A6, known as Lemmon, is a nonperiodic comet with an orbital period of around 1,350 years. Most of its time is ...

A team of astronomers has attempted to track the path of interstellar object 3I/ATLAS back into the past, tracing its path ...

According to StarWalk, the best time to observe Comet Lemmon is from October 12 (today!) until November 2. The stargazing website predicted it could be the ‘best comet of 2025’. It will be near Earth, ...

NASA and the European Space Agency are tracking the 3I/ATLAS interstellar object as it travels past Mars on its way toward the Sun and through the solar system.

Comet C/2025 A6 (Lemmon) is just weeks away from a close approach to Earth that could make it visible to the naked eye in the ...

Comet SWAN will be visible only in early evenings after sunset, while Lemmon can be seen just before sunrise. However, both ...

Two rare bright comets are visiting our neighborhood this month, making for once-in-a-lifetime viewing. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are already showing off their green tails ...