WASHINGTON Jupiter, the solar system's largest planet, may have been smacked head-on by an embryonic planet 10 times Earth's mass not long after being formed, a monumental crash with apparent lasting effects on the Jovian core, scientists said on Thursday.
WASHINGTON Genetic research that reconstructed the past population dynamics of the cave bear, a prominent prehistoric denizen of Europe, implicates Homo sapiens rather than climate cooling in the Ice Age extinction of these brawny plant-loving beasts.
WASHINGTON Astronomers have created the most precise map to date of the Milky Way by tracking thousands of big pulsating stars spread throughout the galaxy, demonstrating that its disk of myriad stars is not flat but dramatically warped and twisted in shape.
Harold "Hal" Prince, who won a record 21 Tony Awards as producer and director of some of Broadway's biggest hits of the second half of the 20th century including "The Phantom of the Opera," "West Side Story," "Fiddler on the Roof," "Cabaret" and "Evita," died on Wednesday at age 91. | Video
WASHINGTON Hundreds of fossils of a primordial sea creature with rake-like claws and a head resembling a famous fictional spaceship have been unearthed in Canada, providing a wealth of information about an important predator from a key time in the evolution of life on Earth.
WASHINGTON Scientists have mapped the genome of the Komodo dragon, the world's largest lizard, discovering intriguing secrets behind the impressive speed and endurance these cold-blooded predators muster by ratcheting up their metabolism to mammal-like levels.
WASHINGTON Observations of light coming from a star zipping in orbit around the humongous black hole at the center of our galaxy have provided fresh evidence backing Albert Einstein's 1915 theory of general relativity, astronomers said on Thursday.
WASHINGTON The Milky Way, home to our sun and billions of other stars, merged with another smaller galaxy in a colossal cosmic collision roughly 10 billion years ago, scientists said on Monday based on data from the Gaia space observatory.
WASHINGTON A shrew-like primitive mammal that inhabited China 165 million years ago represents a milestone in mammalian evolution, scientists said on Thursday, boasting a key anatomical trait in its throat that helped usher in the era of polite table manners.
WASHINGTON After investigating the nature of a mysterious and apparently cigar-shaped object called 'Oumuamua spotted in 2017 speeding through our solar system, astronomers remain uncertain over how to classify it, but are confident it is not an alien spaceship.