It is a question that feels like it should have a straightforward answer: how many planets are there in our solar system? Since Pluto was relegated back down to dwarf planet status, almost everyone ...

On April 18, Mercury will meet Pluto in a powerful and brutally honest sextile, setting the stage for conversations and ...

Discover the incredible story of NASA's New Horizons mission, from its 2006 launch aboard an Atlas V rocket to its historic 2015 flyby of Pluto. Learn how this space probe, utilizing a gravitational ...

Look out for earthshine on the crescent moon as it shines near Venus and the 1,000-strong Pleiades star cluster.

On April 18, Mercury, Mars, Saturn, and Neptune align in the sky, but it might be hard to Tennesseans to spot. Here is what ...

Slow down, read between the lines and don’t hesitate to question what feels a little too good to be true ...

If you look up on a clear night, the brightest and largest object in the sky will probably be the moon. And unless you have a decent telescope, it is the only natural satellite you can see with your ...