A cosmic rose blossoms amidst a field of stars in this deep space vista from astrophotographer Ronald Brecher, which captures the ancient light of the star-forming region as it glows in the ...

In our solar system, the four inner ​planets are rocky and the four outer planets ⁠are gaseous. The rocky dwarf planets like Pluto that orbit beyond the gas planets are much smaller than any of the ...

Earth's shadow has two main regions: the outer shadow, called the penumbra, and the inner shadow, known as the umbra. The ...