A comical planetary beauty contest is described, highlighting the unique traits of each planet: Mercury’s fiery nature, Venus ...

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

For decades, we believed there were nine planets in our solar system—until Pluto was reclassified in 2006. But what if ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.

Is Earth really exceptional?  A new book seems to reaffirm that notion.  But given the right conditions, primitive life may be a mere byproduct of biophysics.

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

Incredibly powerful marsquakes that violently shake the red planet don't always begin under the surface, research shows.

Scientists have been unable to determine whether the dwarf planet’s organics were produced by its own chemical processes or ...

Scientists say the threat of a newly discovered asteroid has risen slightly in the past few weeks as the world's telescopes ...

A new study rewrites the story of human evolution, suggesting that intelligent life is not rare but a natural planetary ...

NASA is preparing to launch its exoplanet telescope Pandora and it got a step closer on Monday. In a statement, the agency announced that it has chosen Elon Musk's SpaceX to launch the telescope that ...

When looking at our solar system, the planets going around the sun seem to be set up in a pretty organized fashion. They are ...