Latest about expert voices
The 1st photograph of all Earth: 50 years on, Blue Marble still inspires
The astronauts of NASA's Apollo 17 spacecraft, the last crewed mission to the moon, took a photograph of Earth and changed the way we visualized our planet forever.
Something is wrong with Einstein's theory of gravity
Albert Einstein's theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.
NSF plans another collapse for Arecibo Observatory (op-ed)
The collapse of the world's most powerful radio and radar telescope didn't kill off science at the Arecibo Observatory, but the National Science Foundation might.
Scientists have traced Earth's path through the galaxy via tiny crystals found in the crust
Tiny grains of minerals smaller than the width of human hair hold clues to the construction of our planet Earth and its path through the Milky Way.
Mystery crater potentially caused by relative of dinosaur-killing asteroid
The surprise crater was discovered on Earth's unexplored ocean floor.
Curious Kids: What would happen if the world split in half?
The solar system isn't as violent as it used to be, when giant impacts could shatter worlds.
Astronomers have detected another 'planet killer' asteroid. Could we miss one coming our way?
If you surfed the web this morning, you may have seen news of the latest existential threat to humanity: a “planet killer” asteroid named 2022 AP7.
How did we figure out atoms exist?
The concept of atoms had been floating around off and on for a few millennia, but it took some clever experimentation to pinpoint their existence.
