SpaceX double vision: These photos show two Falcon 9 rockets on their pads for back-to-back launches

Two SpaceX Falcon 9 rockets stand ready to launch different missions from their Florida launch pads. At right is a Falcon 9 carrying 49 Starlink internet satellites atop NASA’s Pad 39A at the Kennedy Space Center. At left, a different Falcon 9 with the Italian Cosmo-SkyMed Second Generation FM2 satellite stands atop a pad at … Read more

How to spot the Double Cluster and the Carina Nebula this week

By Abigail Beall Cristian Cestaro/Alamy IN THE northern hemisphere, winter is still with us. That means dark nights and plenty of opportunity to look for fainter targets in the sky. In the southern hemisphere, nights are short, but stargazing is still possible. This week, we have two activities, one for the amateur astronomers of each … Read more

Svalbard: Glacier ice loss projected to roughly double by 2100

Archive photos of the Norwegian archipelago’s glaciers enabled researchers to reconstruct past melting and project ice mass loss under future climate change Environment 19 January 2022 By Adam Vaughan A glacier in Svalbard as it appeared in 1936 (top) and in 2009 (below) Norwegian Polar Institute and Geyman et al. (2022), Nature Glaciers in Svalbard, … Read more

Double pulsar data helps Einstein’s theory of gravity pass toughest test yet | Science

A long-awaited, 16-year study of an orbiting pair of spinning neutron stars has yielded the most wide-ranging tests yet of Albert Einstein’s theory of gravity. Unsurprisingly, the general theory of relativity, as it’s called, passed all the tests—a sign of its soundness, but also a null result that leaves physicists looking for clues to develop … Read more

Black hole jet boasts double helix structure molded by powerful magnetic fields

An extraordinary galactic jet ejected from a supermassive black hole boasts a corkscrew-like helical structure, new ground-based telescope views reveal. The black hole lies at the center of an elliptical galaxy called Messier 87 (M87), which is located roughly 55 million light-years from Earth. The black hole — the first, and only, black hole ever … Read more