Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a very different structure than comets in the solar system. Hydroxyl compounds ...

A newly discovered comet, Comet Lemmon, will make its closest approach to Earth on Oct. 21. The comet may be visible to the naked eye in late October, best viewed in a dark sky location. If you miss ...

A comet discovered earlier this year will soon make its closest approach to Earth and should be visible to the naked eye in the night sky, if you know where to look. But don't hesitate. If you miss ...

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 ...

The question is not if — it’s when. We will all use an AI browser soon. But which one and how soon. Meanwhile, Chrome dominates on both PCs and mobiles and no pureplay AI browser is noisier than Comet ...

Despite an abundance of data suggesting interstellar object 3I/ATLAS — the third object ever detected ripping through our solar system — is simply a comet, Harvard astronomer Avi Loeb still hasn’t ...

The comet is only the third interstellar object recorded in the solar system. Astronomers just caught a rare glimpse of an interstellar comet as it zoomed past Mars. Images of the object, dubbed ...

A rare interstellar comet — only the third ever confirmed to enter our solar system — was photographed last week, closely approaching Mars, the European Space Agency said Tuesday. The images taken on ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...

3I/ATLAS, only the third object from beyond our solar system ever spotted from Earth, was viewed from Mars by an orbiting European spacecraft. By Kenneth Chang Kenneth Chang reported on the first ...

Perplexity Throws Open the Doors to Its Comet AI Browser, Now Free for Everyone Your email has been sent Perplexity AI has announced that its Comet browser ...