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

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

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...

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

Each planet in the solar system is characterized as different cricket team players, with unique behaviors and skills. Earth ...

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

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

Predictions are uncertain, but the solar system may be pushed farther from the galactic core or even ejected entirely from ...

These embryos, somewhere between small planetesimals and fully formed planets, were abundant during the solar system's formative stages and played a critical role in planetary formation.

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 ...

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.