There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and ...

A few decades ago, the Solar System had nine planets, but in 2006 the International Astronomical Union reclassified Pluto as ...

If Brown’s hidden world is real, Rubin will almost certainly find it or strong indirect evidence that it exists. “In the ...

19, 2024 — Scientists have unveiled groundbreaking research on the origins of lunar water, offering insights that could reshape our understanding of the Earth-Moon system and the broader solar ...

You're going to want to look up -- this event includes the three furthest planets in our solar system. 2025 is starting off ...

The Lunar Environment Heliospheric X-ray Imager (LEXI) — an instrument that can detect X-rays bouncing off Earth's ...

NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 2016 Astronomical Journal science paper that points to ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around, including Venus, Mars ...

But the formation process of multi-planet systems, like our own Solar System, is still poorly understood. The best example object to study multi-planet system formation is a young star known as ...

The spacecraft first flew over the planet's cold and dark night side before transitioning to the sunlit northern regions.