An Ancient Stellar Flyby Could Have Put Planet Nine into its Distant Orbit

Posted on Categories Discover Magazine

New observations of a distant exoplanet and its solar system offer proof of a long-standing astronomical theory: passing stars can perturb planetary systems and change planets’ orbits – for better or worse. Depending on how they pass by, stars can nudge planets into more stable orbits or give them a kick that sends out of the system entirely. And new evidence implies that these kinds of encounters may explain the paths of strange objects in our own solar system, l ...read more

SpaceX’s Crew Dragon Successfully Docked with the ISS, Will Return to Earth Friday

Posted on Categories Discover Magazine

SpaceX’s Crew Dragon capsule successfully completed its first docking with the International Space Station on Sunday morning, following a successful launch Saturday morning. This marks the first time SpaceX has ever docked with ISS under its own power. The Crew Dragon docking went smooth, allaying safety concerns. New Connections Previously, the Dragon cargo capsule has merely flown close before being grabbed by a robotic arm under the control of ISS crewmembers. This was SpaceX’s fi ...read more

SpaceX’s Crew Dragon Successfully Launched Into Orbit, Marking a Major Milestone For Private Spaceflight

Posted on Categories Discover Magazine

SpaceX’s Crew Dragon capsule successfully reached outer space at around 2 a.m. EST Saturday morning. Repeated cheers rang out from the crowds at the Kennedy Space Center launch-site as the capsule passed each flight stage. If the rest of the flight goes well over the next six days, and NASA certifies the capsule is safe, Elon Musk’s rocket company could begin launching astronauts into orbit this summer. That would mark the first time a private company has launched a human into orbit ...read more

How Plate Tectonics Could Make Harsh Alien Planets More Friendly to Life

Posted on Categories Discover Magazine

(Inside Science) -- Shifting, slipping and colliding tectonic plates played an essential role in the emergence and evolution of life on Earth. Such tectonic activity generated volcanoes that spewed carbon dioxide and other gases into the air. Rain brought the gases down to Earth, where they were pushed underground again by moving plates. For billions of years the cycle has regulated the climate and stabilized the temperature, which helped enable life to arise. Plate tectonics like what's ...read more

These Singing Mice Take Turns During Duets, Offering Insights into Human Speech

Posted on Categories Discover Magazine

High in the cloud forests of Costa Rica, a distinct chirping sound ripples across the landscape. This high-pitched staccato refrain trills not from birds, but mice. Now researchers have found that the tiny rodents making these sounds, known as Alston’s singing mice, take turns belting out their tunes much in the same way people take turns when they talk to each other. The discovery could shed light on communication problems in human speech. Some 10 percent of the Americans suffer from ...read more