The magnificent sight of the Milky Way, for example, can now only be seen in rural areas. Why do we shine light up into the sky in the first place?
Astronomers have proposed two theories to explain the mysterious origin of blue stragglers.
It was a great moment in the history of NASA, especially since people had been working so long at trying to get a probe to Mars
Solar winds create a bubble that cover our entire solar system! Scientists call this the sun's heliosphere.
What is a backwards sunspot and what does it signify?
When you look up into the night sky you can see hundreds of stars without even using a telescope. How did all of these stars form?
On last count, there were nine planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Soon, however, we might need to add a tenth planet to the solar lineup. Learn more on this Moment of Science.
Just how big was 2004′s Sumatra earthquake? Learn more on this Moment of Science.
You may have heard of parallax, but what is it? Find out on this Moment of Science.
Learn about the most distant object to orbit the sun, on this Moment of Science.