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

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.

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

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

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

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

THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial.

February will be an awe-inspiring month for astronomy enthusiasts who will be able to the see the solar system's planets ...

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