How long does it take Pluto to orbit the sun? Learn more about how this planet makes one lap around our Solar System.

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...

Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly elongated ...

Was there ever a planet closer to the Sun than Mercury? Explore the captivating theory of Vulcan, a world that has challenged astronomers' understanding of the solar system for decades. Donald ...

Some scientists think they discovered a new dwarf planet at the edge of the solar system, so far away that it takes around 25 ...

Summer gets its official start in the Northern Hemisphere with the arrival of the summer solstice. The sun will trace its ...

The European Space Agency's Solar Orbiter captured the first-ever images of the sun's south pole in March, which were ...

According to the National Weather Service, the summer solstice will occur on Friday at 10:42 p.m. Eastern time (it will be ...

On Earth, depending on where you are, the analemma can be at different angles, though it always traces out this ...

New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.

This path, known as the ecliptic, is the same one that the sun travels along during the year. This happens because the planets orbit around the sun in the same plane. Dr. van Belle likened the ...