Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.

Canadian astronomers have taken an extraordinary step in understanding how planets are born, using the James Webb Space ...

The solar system is portrayed as a dynamic, gossip-fueled family, with each planet offering snide comments about one another, ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

The European Southern Observatory's Very Large Telescope (VLT) imaged both of the planets directly, and PDS 70b has the ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

NASA said the system is thought to be moving at least 1.2 million miler per hour, nearly twice as fast as our solar system.

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...