Global Astronomy Groups Say They’re Concerned About SpaceX’s Starlink Satellites

Posted on Categories Discover Magazine

Telescopes at Lowell Observatory in Arizona captured this image of galaxies on May 25, their images marred by the reflected light from more than 25 Starlink satellites as they passed overhead. (Credit: Victoria Girgis/Lowell Observatory) Elon Musk’s company SpaceX launched 60 small satellites on May 23 as the beginning of the company's Starlink program. They're the vanguard of a planned 12,000-satellite-strong constellation that Musk intends to serve as the infrastructure for a cheap gl ...read more

There’s An Enormous, Mysterious Mass Under the Moon’s Largest Crater

Posted on Categories Discover Magazine

The South Pole-Aitken basin shows up clearly as low-lying blue in a topographical map of the moon, with the newly discovered mass located underneath the dotted line. (Credit: NASA/Goddard Space Flight Center/University of Arizona) Buried under the largest, oldest crater on the moon, scientists have discovered an enormous mass of dense material, possibly the remains of the asteroid that formed the crater some 4 billion years ago. Astronomers led by Peter B. James from Baylor University di ...read more

Ancient Climate Change Pushed Tropical Birds South From Canada

Posted on Categories Discover Magazine

A Knysna Turaco (Tauraco corythaix) in South Africa. (Credit: Daniel J. Field) Many of the birds we see only in the tropics today once lived as far north as Canada and Russia. A warmer climate millions of years ago gave them free reign over more northern habitats, before gradual climatic shifts pushed them southwards, a new study shows. Now, the climate is changing again, but birds may not be able to adapt fast enough this time around. "We've illustrated the extent to which suitabl ...read more

Record Rain Is Drowning Fields in the Midwest — Is It Climate Change?

Posted on Categories Discover Magazine

Heavy rains and flooding through the winter and spring have left fields across the Midwest too wet to plant. (Credit: Matauw/Shutterstock) Every spring, farmers across the Midwest take to the fields to plant their crops. Here, corn and soybeans will reign supreme over tens of millions of acres, as soon as conditions are right to plant. Not too wet, not too dry – just right. But the U.S. had an exceptionally wet winter this year. And it kept raining in the spring. April turned to May, ...read more

Ancient DNA Study Reveals Deep Roots of Modern Grapevines

Posted on Categories Discover Magazine

New research into the genetic backstory of ancient French grapevines reveals that some varieties cultivated today haven't changed for centuries. (Credit: Victor Grigas/Wikimedia Commons) Consider this the next time you toast a friend and wish them long life: The wine swishing around your glass may have come from grapevines with very long-lived lineages indeed. Researchers analyzing genetic material from ancient grape seeds turned up evidence of varieties almost unchanged for nearly 2,000 yea ...read more