Light from supernova blast reached Earth 1,700 years ago — ScienceDaily

Astronomers are winding back the clock on the expanding remains of a nearby, exploded star. By using NASA’s Hubble Space Telescope, they retraced the speedy shrapnel from the blast to calculate a more accurate estimate of the location and time of the stellar detonation. The victim is a star that exploded long ago in the […]

Ancient humans may have reached remote Japanese islands deliberately

Long ago, ancient mariners successfully navigated a perilous ocean journey to arrive at Japan’s Ryukyu Islands, a new study suggests. Archaeological sites on six of these isles — part of a 1,200-kilometer-long chain — indicate that migrations to the islands occurred 35,000 to 30,000 years ago, both from the south via Taiwan and from the […]