Gagarin's success made him an international hero and a symbol of the Soviet Union's achievements in space exploration.

Learn about Explorer 1, the first U.S. satellite launched in 1958, its impact on space science, pivotal discoveries like the ...

President Donald Trump likes to project dominance and confidence on the world stage, but lately he's been expressing more ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

On Sept. 23, a spacecraft will launch with a clear mission — to keep a constant watch on the sun to help protect Earth from space weather. The satellite, Space Weather Follow-On L1 (SWFO-L1), is ...

WASHINGTON — York Space Systems’ recent delivery of 21 satellites for the U.S. military marks the company’s largest batch to date, a milestone its chief executive says reflects years of investment in ...

The Space Development Agency has launched the first Proliferated Warfighter Space Architecture Tranche 1 Transport Layer ...

As China threatens to overtake U.S. leadership in science and technology, America has responded by sabotaging its own engines ...

Best known for its prowess as a race-timing instrument, the Heuer 2915A was a long-range 1/5-second timer that featured seven jewels and a nickel-chrome-plated case. The dual sub-dial layout ...

Her late father Harold Johnson is a key figure in America’s early space endeavours. Among other things, he helped start the first satellite systems with the US government, worked at the White House ...

Abstract: Snow cover varies at the scale of a mountain range depending on topography (altitude, orientation and slope) and weather conditions. We provide a simple SAR-based remote sensing tool to ...