
Space
Ancient black holes might solve the mystery of dark matter
Studies of gravitational waves, stars and other features of the universe could reveal whether such “primordial” black holes exist.
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Studies of gravitational waves, stars and other features of the universe could reveal whether such “primordial” black holes exist.
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This sandlike dust blankets planets, asteroids and other rocky surfaces of our solar system, including our own planet.
Voyager 1 and 2 left Earth in 1977 to fly by the outer planets. Nearly 50 years later, these spacecraft are still transforming our knowledge of space.
Astronauts on the space station have gathered data on everything from climate change to dark matter.
Images of six Jupiter-sized worlds taken by the James Webb Space Telescope offer clues to how planets and stars form.
Supernovas are spectacular stellar explosions that sprinkle heavy elements throughout the universe.
These flybys could jostle the orbits of planets and satellites as teeny black holes whiz by us once a decade or so.
Ongoing observations and new lunar rock samples, including the first from its far side, should point to how both the moon and our Earth evolved.
Clues about this ancient protoplanet's catastrophic end may have been entombed in Earth's lower mantle for billions of years.
For decades, science mostly ignored UFOs. Then in 2015 Navy pilots started reporting them. The U.S. government enlisted scientists to investigate.