Asteroids are usually grouped into three main types based on what they are made of: C-type, S-type and M-type.

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that one trip around the Sun takes more than 11,000 years. For much of that time ...

How many Earth-like exoplanets orbit M dwarf stars (Red dwarf stars), which are smaller and cooler than our Sun? This is what ...

A team of researchers has outlined how a new "direct fusion drive" propulsion system could allow us to reach Sedna this ...