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The Parker Solar Probe turned its camera on Venus as the spacecraft flew by during a gravity assist.
Why does kissing feel good? Watch this video to learn why humans are drawn to puckering up.
On February 5, 1963, Maarten Schmidt unraveled the mystery of quasars and pushed back the edges of the known cosmos. His insight into quasars - the...
If you considered only Earth's brightness, you could still see our world from as far away as the orbit of the 8th planet, Neptune. In practice,...
A new study of data from NASA's bountiful Cassini mission shows that Titan's largest methane sea, Kraken Mare, is at least 1,000 feet - 300 meters...
SpaceX’s CRS-21 Cargo Dragon undocked from the International Space Station’s Harmony module on January 12, 2021, succeeding in the world’s first-ever autonomous...
In a dark sky, you might see 25 meteors per hour at the Quadrantid's peak. But moonlight is sure to mar this year's production.
World timekeepers have decreed there will be no leap second on December 31, 2020.
A Christmas Eve photograph showed humans their home world from a whole new perspective. This is the photo that's said to have launched the environmental movement....
20 years ago, three astronauts stepped aboard the ISS. It's since hosted residents from many countries, creating humanity’s first history of living in space.