A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

While Loeb is known for making some controversial claims and predictions in the past, he is still a very respected astronomer ...

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

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...

Uranus and Neptune are the two furthest planets in the Solar System and have been visited only once by human spacecraft – by ...

Harvard astornomer Avi Loeb suggests interstellar object 3I/ATLAS could've sent off the Wow! Signal back in 1977.

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

Astronomers found that interstellar object 3I/ATLAS shows an "extreme abundance ratio" of nickel and iron in its gas plume.

Wave-particle interactions across the solar system can have a wide range of effects though they are caused by the same set of ...