Spinosaurus was the largest known predatory dinosaur to roam the Earth. Scientists now say that it was also the first truly semiaquatic dinosaur.
Posts by EarthSky
The startling results of a new survey include 17 previously unknown monuments and dozens of burial mounds surrounding Stonehenge.
Cassiopeia the Queen has the distinct shape of a W, or M.
The Montreal Protocol put the brakes on ozone-depleting chemicals 30 years ago. But one compound is still abundant in Earth’s atmosphere. Where’s it coming from?
Asteroid passes near Earth on September 7. At its closest (18:18 UTC / 2:18 p.m. EDT), it’s about the same distance from Earth as weather and communications satellites.
Our supercluster is 500 million light-years in diameter and contains the mass of a hundred million billion suns. Its new name is Hawaiian for “immense heaven.”
With ongoing climate change, the long view of future drought risk in the U.S. Southwest is not a pretty picture, say scientists.
Pioneer 11 was the first spacecraft ever to encounter Saturn. It paved the way for the even-more-sophisticated Voyager spacecraft.
September’s birthstone, the sapphire, was said to represent the purity of the soul.
An MIT study finds big snowstorms will still occur in the Northern Hemisphere despite global warming.