The interstellar comet 3I/ATLAS may be out of view of Earth, but orbiters on Mars were able to recently get a look at it.

Interstellar comet 3I/ATLAS — just the third such object ever confirmed to have entered our solar system — flew past Mars ...

I/Atlas trajectory has been flagged as anomalous. Avi Loeb says the alignment of a 33 billion tonne object with the ecliptic ...

New photos of the mysterious interstellar object 3I/ATLAS taken from Mars have reignited theories that it could be an alien spacecraft.

The comet is such an unusal visitor that Nasa has set up a tracker for people to keep an eye on what its doing. It passed ...

Scientists have discovered that the 3I/ATLAS — a Manhattan-sized interstellar object that potentially has alien tech — is much larger than previously thought.... First discovered by NASA on July 1, ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

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

Mysterious interstellar object 3I/ATLAS is hurtling through the solar system. As it continues its journey, it offers an ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest observations will be made.

A mysterious object traveling through our solar system may have emitted a signal, according to a scientist. This enigmatic ...

Now, in a new yet-to-be-peer-reviewed paper, an international team of astronomers analyzed data collected by the European ...