Rare 'Excalibur' sword from Spain dates to Islamic period 1,000 years ago
The sword is the first weapon from the Islamic period to be found in the Spanish city of Valencia.
The sword is the first weapon from the Islamic period to be found in the Spanish city of Valencia.
Submillimeter wavelength radio observations of the Southern Ring Nebula have identified that it's actually a double ring, shaped by the interactions of three stars.
Mars has had frequent planet-wide auroras in recent months, including an unprecedented trio of events in February. Experts say the sudden increase is the result of the ongoing solar maximum.
A new map of a brain network that sustains wakefulness in humans could help improve our understanding of consciousness.
The moon controls the tides, impacts marine ecosystems, and subtly influences time on Earth. So what would happen if the moon suddenly disappeared?
A new imaging technique, which captured frozen lithium atoms transforming into quantum waves, could be used to probe some of the most poorly understood aspects of the quantum world.
Northrop Grumman Corporation has built its Manta Ray uncrewed underwater vehicle, which will operate long-duration missions and carry payloads into the ocean depths in partnership with DARPA.
Up to 50 "shooting stars" per hour may be visible in moonless skies as the Eta Aquarid meteor shower peaks Saturday and Sunday (May 4 and 5). The annual shower is linked to debris from Halley's comet.
In recent experiments, rat brain cells filled in for lost neurons in mouse brains, raising new possibilities for growing donor tissues across species.
Researchers say a villa buried by the eruption in A.D. 79 corresponds with records of the Roman emperor's death in A.D. 14.
Prehistoric cold viruses are hard to find in the historical record, but scientists have unearthed some evidence in ancient human teeth.
Scientists have detected a new, unusually large molecule never seen in space before. The 13-atom molecule, called 2-methoxyethanol, was detected in the Cat's Paw Nebula.
Doctors say it's very unusual to develop a visual impairment as the first symptom of lung cancer.
Captured in infrared light by the James Webb Space Telescope, the star-forming Horsehead Nebula is located 1,300 light-years away in the Orion Constellation.
Chinese astronomers have shared the most detailed geological map of the moon ever created, revealing more than 12,000 structures. The new atlas will be essential for picking out landing locations and resource sites for future lunar missions.
Arabica coffee plant appears to have evolved between 600,000 and 1 million years ago after two other coffee species crossbred in the forests of what is now Ethiopia.
Scientists in Japan have transferred data at 100 gigabits per second in high-frequency wavelength bands over a distance of 330 feet for the first time.
Until the end of the last ice age, American cheetahs, enormous armadillolike creatures and giant sloths called North America home. But it's long puzzled scientists why these animals went extinct about 10,000 years ago.
Supermassive black holes may create conditions akin to "cosmic intersections with failed traffic lights" that make collisions between smaller stellar-mass black holes inevitable.