346K views · 1.7K reactions | On October 3, Comet 3I/ATLAS will make its closest approach to Mars. ("Close" being about 17 million miles from the surface ) Use Eyes on the Solar System to follow the interstellar comet's journey and see where else it's headed. go.nasa.gov/4goaV2t | NASA Jet Propulsion Laboratory | Facebook

A comet from another star system is flying through ours. The comet, named 3I/ATLAS, is only the third known interstellar object ever observed in our solar system. First spotted in July 2025 by the ATLAS telescope in Hawaii, it didn’t take long for astronomers to realize it wasn’t from here. Its speed and trajectory made it clear: this comet came from deep space. At its closest point to the Sun – called perihelion – 3I/ATLAS was hidden from Earth’s view, blocked by the Sun. But Mars was perfectly

Comet C/2023 H2 (Lemmon)• Northolt Branch Observatories 14.11.23 • C/2023 H2 (Lemmon) is a comet that is currently observable in the constellation of Aquila. It was discovered at Mt. Lemmon Survey on the 23rd of April. C/2023 H2) came to perihelion on the 29th of October Its closest approach to Earth was on the 10th of November, at a distance of 0.1930au (28 million km). • Please don't forget to follow Northolt Branch Observatories The current Right Ascension of Comet C/2023 H2 (Lemmon) is 20h 1