NASA
NASA scientists are crisscrossing the globe in 2017 to investigate critical scientific questions about how our planet is changing and what impacts humans are having on it.
NASA's NEOWISE mission has recently discovered some celestial objects traveling through our neighborhood.
The entire galaxy essentially acts as an astronomical laser that beams out microwave emission rather than visible light.
The constellation of Virgo is especially rich in galaxies, due in part to the presence of a massive and gravitationally-bound collection of over 1,300 galaxies called the Virgo Cluster.
"Let these images -- and those to come -- remind you that we've lived a bold and daring adventure around the solar system's most magnificent planet."
NASA's Dawn spacecraft shows Ceres in great clarity as Dawn moves higher.
Brown dwarfs are thought to be the missing link between planets and stars, with masses up to 80 times that of Jupiter.
For at least a billion years of the distant past, Earth should have been frozen over but wasn't. Scientists thought they knew why, but a new modeling study has debunked that long-accepted scenario.