Is it a bird? Is it a plane? No, it's super Neptune! But this Superman-mimicking planet is not blasting through space on its own. It is being dragged along by its parent star.

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Did you know that stars are so far from our solar system that constellations would look the same if we were to view them from other planets? Learn more with our fun facts of the day!

In fact, it takes Jupiter 12 Earth-years to complete one orbit. So it can be seen slowly moving across the entire night sky with respect to the background stars—and it’s therefore Earth’s ...

For centuries, planets beyond our solar system—called exoplanets—existed only in theory and science fiction. It seemed nearly impossible to detect planets light-years away, since the ...

Just a sugar cube of neutron star matter would weigh about one hundred million tons on Earth. A neutron star's almost incomprehensible density causes protons and electrons to combine into neutrons ...

But due to the faintness of the signal, it was not clear whether this was caused by a planet or due to background ... that of Earth, but as yet they do not know the diameter. 'The method we are using ...

Hubble, with its sharp imaging capabilities, detected more than 200 million stars in the Andromeda galaxy that are brighter than Earth's sun ... within the galaxy, background galaxies seen ...

When Earth is the closest it gets to a planet ... retrograde motion right now—going backward with respect to the background stars—which it always does around the time of its once-every ...

One planet is 30% larger than Earth and orbits its star in less than three days. The other is 70% larger than the Earth and might host a deep ocean. These two exoplanets are super-Earths more ...