Morphology of Palaeospondylus shows affinity to tetrapod ancestors

Traquair, RH On the fossil fishes at Achanarras Quarry, Caithness. Ann. Mag. nat. history 6479–486 (1890). Article Google Scholar Jarvik, E. Basic Structure and Evolution of Vertebrates vol. I (Academic Press, 1980). Ahlberg, PE, Clack, JA & Lukševičs, E. Rapid braincase evolution between panderichthys and the earliest tetrapods. nature 38161–64 (1996). ADS CAS Article Google … Read more

Did dinosaur blood run warm or cold? Long-standing question may finally have an answer

This illustration depicts, from left, plesiosaurus, stegosaurus, diplodocus, allosaurus and calypte (modern hummingbird), with red hues indicating warm-bloodedness and blue hues for cold-bloodedness. (J. Wiemann) Estimated read time: 4-5 minutes ATLANTA — Fearsome predators like T. rex and towering, telescope-necked dinosaurs, such as brachiosaurus, were warm-blooded creatures in the same way birds and mammals are, … Read more

Astronomer captures image of the huge, mile-wide asteroid (safely) passing Earth

It’s extremely unlikely that a colossal space rock will slam into Earth in the coming centuries, and beyond. NASA, however, is vigilantly watching the skies for any near-Earth objects that might threaten our planet, whether on a small, regional, or planetary scale. Asteroids, often small, regularly whizz by Earth — which in space terms still … Read more

Researchers Made Ultracold Quantum Bubbles on the Space Station

In March 2018, researchers launched what looks like a white, cooler-sized fridge to the International Space Station. That heavy box houses a $100 million facility known as the Cold Atom Laboratory, which enables an array of atomic physics experiments to be done at freezing temperatures in the zero-g of space. With those unique conditions, scientists … Read more

Chemical clues reveal dinosaur metabolism

Schematic drawing of a subset of the animals that were investigated as part of the study. Metabolic rates and resulting thermophysiological strategies are color-coded, orange hues characterize high metabolic rates coinciding with warm-bloodedness, and blue hues characterize low-metabolic rates coinciding with cold-bloodedness. From left to right: Plesiosaurus, Stegosaurus, Diplodocus, Allosaurus, Calypte (modern hummingbird). Credit: J. … Read more

NASA’s InSight Lander Takes One Last Dusty Selfie Before It Shuts Down for Good

One of NASA’s Mars robots has taken one last selfie as it powers down for good. The agency released a photo of the InSight lander covered in red Martian dust on Monday, along with an announcement that the robot’s arms will soon be placed in a “retirement pose” as it begins to shut down operations … Read more

Tau Herculids meteor shower could unleash 1,000 shooting stars per hour

Placeholder while article actions load Astronomers are reporting that there’s a chance that a “meteor storm” could occur next Monday night. It probably won’t happen, but if it does, the display could be absolutely otherworldly. The forthcoming Tau Herculid meteor shower ordinarily results in just a trickle of shooting stars between mid-May and mid-June, but … Read more

Boeing capsule lands back on Earth after space shakedown

CAPE CANAVERAL, Fla. (AP) — Boeing’s crew taxi returned to Earth from the International Space Station on Wednesday, completing a repeat test flight before NASA astronauts climb aboard. It was a quick trip back: The Starliner capsule parachuted into the New Mexico desert just four hours after leaving the orbiting lab, with airbags attached to … Read more

Homebrew Radio Telescope Bags Pulsar

When one mulls the possibility of detecting pulsars, to the degree that one does, thoughts turn to large dish antennas and rack upon rack of sensitive receivers, filters, and digital signal processors. But there’s more than one way to catch the regular radio bursts from these celestial beacons, and if you know what you’re doing, … Read more