And in the past decade, more than 20 spacecraft have ventured into the deepest reaches of our solar system. These probes ... sending back pictures that humble or awe, even as they advance ...

NASA is releasing stunning photos taken by the Hubble Space Telescope to celebrate its 35th anniversary. Check them out below ...

Staring at the sun—a close (but safe) look at our home star Staring at the sun ... Free learning activities and videos about the solar system Free learning activities and videos about the ...

The moon slipped between the Earth and the sun on Saturday, casting a shadow on our planet in parts ... A composite image of seven separate photos shows the partial solar eclipse as seen at ...