Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational ... the temperature decreases, for example, Mercury is 430 °C whereas Neptune is -200 °C the time taken to ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

A very rare treat is about to grace Earth's night skies.

To put it into perspective, if the age of the Solar System were a year, humans would appear on Earth just before the countdown on New Year’s Eve. This is an illustration of Tythe, a hypothetical ...

Kuiper Belt, well past the orbit of Neptune (artistic illustration). There may be an undiscovered planet in the outer solar system whose presence is revealed by the strange orbit of objects beyond ...

A six-planet alignment or parade will form an arc in the early night sky, peaking in it's visibility Jan. 17-18. We let you ...