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

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

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

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

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

Observations made by NASA's Neil Gehrels Swift Space Observatory have revealed that the interstellar object 3I/ATLAS currently passing through our Solar System is emitting hydroxyl gas. This is ...

A mysterious space object named 2023 KQ14, nicknamed “Ammonite,” challenges theories about the mysterious and possible Planet ...

Uranus and Neptune are the two furthest planets in the Solar System and have been visited only once by human spacecraft – by Voyager 2 over 30 years ago – so there is a lot about them that we do not ...

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 ...