An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse ...

Simpson's paper, "How might a planet between Mars and Jupiter influence the inner solar system? Effects on orbital motion, ...

Earth is the sixth planet from the edge of the solar system, meaning we're none too near this cold and inhospitable frontier. But we've sent out various spacecraft over the years, so do we have ...

Instead, some of it formed a disk that ultimately would condense into the planets and other, smaller members of the solar system. Here are the objects in our inner solar system. NASA’s Solar ...

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers discovered that the inner portion of the Oort cloud likely has spiral ...

The inner solar system spins much more slowly than the laws of modern physics predict, and a new study may help to explain why. A thin disk of gas and dust — known as an accretion disk ...

The identity of this presumed cloud is not fully known, but scientists strongly believe that it is a source of long-period comets (LPCs) that enter the inner solar system from time to time and can ...

As a result, HD 20782 b experiences wild temperature swings as it travels from the inner solar system to the outer system on its 585-day orbit. One experienced planetary researcher wanted to know ...

A huge comet that is entering the final stages of a multi-million year journey towards the sun has entered the inner part of our solar system and is due to make its closest pass to Earth in July.

Scientists have known that a magnetic field shaped the inner solar system, where Earth and the terrestrial planets were formed. But it was unclear whether such a magnetic influence extended into ...