Most people imagine first contact as a meeting with flesh-and-blood extraterrestrials, but this theory argues that advanced civilizations would likely abandon biology long before mastering ...

Here is a database of all the documents declassified by President Donald Trump since July.

Compact sensor-packed probes, propelled by laser- or Sun-powered sails, could be humanity's first scouts to another star system.

The recent confirmation of an atmosphere around a rocky exoplanet called LHS 1140b has created a wave of interest within the ...

U.S. Senator Marsha Blackburn won the GOP primary for governor, while Jerri Green won the Democratic nomination.

Far beyond Earth, orbiting the giant planet Jupiter, lies one of the most fascinating places in the Solar System. At first ...

U.S. Sen. Marsha Blackburn has won Tennessee's Republican gubernatorial primary and will face Democrat Jerri Green in ...

Light sails can propel spacecraft using the energy of the Sun. Credit: NASA/Aero Animation/Ben Schweighart Tiny spacecraft riding beams of light could put humanity within reach of another star system ...

US declassified records detail a 1963 probe into a claimed sphere crash in Brazil.

The Trump administration abruptly declined to renew a contract for a cybersecurity firm it hired to examine voting equipment in Puerto Rico after the company didn’t echo administration officials’ ...