Astronomers have discovered 2017 OF21, a distant dwarf planet candidate located about 90 times farther from the Sun than ...

Spirals of solar wind can spin off larger solar eruptions and disrupt Earth's magnetic field, yet they are too difficult to ...

Created by the sun, the protective bubble of the heliosphere shields our solar system from harmful radiation. A new mission ...

Using Pluto as an example, this celestial body, once considered the ninth planet, was redefined as a dwarf planet in 2006. Its average distance from the Sun is about 5.9 billion kilometers, a distance ...

An enormous asteroid is approaching Earth at 24,136 miles per hour—and will be at its closest to us in two days' time. The ...