NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Nicolaus Copernicus (1473-1543) would bring us from a geocentric universe to the heliocentric one, offering a very familiar, if incomplete, picture of our solar system.

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

Missing The solar system once had five giant gaseous planets rather than the four it has today. That's the conclusion from a computer simulation of the solar system's evolution, which suggests the ...

Researchers using a powerful telescope in Hawaii spotted the visiting object, called A/2017 U1, last week. "We have been waiting for this day for ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

An illustrated diagram of the sun and the planets of the solar system. (Image credit: SCIEPRO via Getty Images) Researchers discovered the 12 potential massive objects around 60 AU from the sun ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.

All the planets in our Solar System do have such a tilt, with the exception of Mercury. Uranus for example has a 98 degree tilt, compared to Earth, which has a tilt of 23.5 degrees.