A large rectangular object hovered low over a major highway, and residents of Pennsylvania reported encounters with Bigfoot, giant birds, and other strange creatures.
Researchers have determined the now-infamous Martian rock is a piece of a larger rock broken and moved by the wheel of NASA's Mars Exploration Rover Opportunity in early January.
Astronomers have used NASA's Chandra X-ray Observatory and a suite of other telescopes to reveal one of the most powerful black holes known.
The sun emitted a mid-level solar flare, peaking at 5:13 a.m. EST on Jan. 7, 2014.
Apparently, it wasn't just fireworks lighting up the skies over northern California on New Year's Eve. Several people reported seeing mysterious flying objects.
ESA’s Gaia mission blasted off this morning on a Soyuz rocket from Europe’s Spaceport in Kourou, French Guiana, on its exciting mission to study a billion suns.
Get to know the Deep Space Network (DSN)—NASA's worldwide radio telescope array that communicates with spacecraft throughout the solar system.
An extraordinary theory that has been getting cred lately is one that suggests our own universe is actually a hologram.
After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion.
Using the powerful eye of NASA's Hubble Space Telescope, two teams of scientists have found faint signatures of water in the atmospheres of five distant planets.
Astronomers have spotted what appear to be two supermassive black holes at the heart of a remote galaxy
Continuing a history of surprising behavior, material from Comet ISON appeared on the other side of the sun on the evening on Nov. 28, 2013
In the early hours of Nov. 27, 2013, Comet ISON entered the field of view of the European Space Agency/NASA Solar and Heliospheric Observatory.
Black holes can be petite, with masses only about 10 times that of our sun -- or monstrous, boasting the equivalent in mass up to 10 billion suns.
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