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6 days ago · Vesta is the only main-belt asteroid visible to the unaided eye. Its mass is about 2.6 × 10 20 kg, and its density is 3.46 grams per cubic cm.
2 days ago · Planet-forming disks, maelstroms of gas and dust swirling around young stars, are nurseries that give rise to planetary systems, including our solar system.
Missing: extinct | Show results with:extinct
4 days ago · H: Is that strange? A: On other worlds. Most reefs are built by microbial organisms. Reef building animals are extremely rare and a sign of an abundance of life ...
5 days ago · This iridium-rich rock layer was the first clue that an asteroid slammed into Earth 66 million years ago, causing the mass extinction that wiped out the ...
4 days ago · A team of cave divers and scientists have uncovered a new cache of extinct monkey fossils submerged deep within the underwater passages of a Caribbean cave.
20 hours ago · Extinction of animals and plants. Read scientific research on the dinosaur extinction, future mass extinctions, and endangered species. What can be done?
21 hours ago · At least two-thirds of Mars' surface is more than 3.5 billion years old, and it could have been habitable 4.48 billion years ago, 500 million years before the ...
5 days ago · Light and heavy rare gases were analyzed in four of the five recovered fragments of the St. Severin meteorite and in separated iron-enriched fractions.
6 days ago · Before a species becomes extinct, it must first be rare. Some species are naturally rare, while others have that rarity imposed upon them by one or more of ...
Missing: four | Show results with:four
4 days ago · Ambitious plans to bring the woolly mammoth and other species back from extinction are now feasible thanks to impressive technological advances, ...
