Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Robert Lee Hotz covered new research and its impact on society for The Wall Street Journal.

In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has ...

To mark the 35th anniversary of the Hubble Space Telescope, Space.com looks at some of the most scientifically significant images that have emerged from the observatory's lens.

NEW YORK — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes ...

A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked ...

If you've ever dreamed of leaving your mark on science, look no further: NASA has a citizen-science program that will let you contribute. Regardless of whether you want to study landslides, comets, or ...

Lucian of Samosatam was probably the first to write about travel to outer space and aliens in his 160 AD work: "A True Story" ...