Looking for planets outside our solar system, also known as exoplanets, just got a little more complicated. Scientists typically search for patterns like rings, arcs and spirals in disks of dust and gas around young stars because those patterns are often considered a sign that an unseen planet orbits a star. But this new simulation shows that planets aren’t the only explanation — the dust and gas in the disk can interact to make those patterns, too.
The light from the star strips the dust of electrons, which heats up the gas, which traps more dust, creating a cycle. Lumps of dust grow into spirals, rings and arcs. No planets necessary. Of course, planets could still be the cause, but the new study cautions against jumping to conclusions!
Credit: NASA/Alex Richert
Photo by @paulnicklen
After 17 years with National Geographic, wildlife conservation photographer and cinematographer Paul Nicklen (@paulnicklen) felt compelled to start something new. “I wanted to see immediate impact through photography,” explains Paul, who co-founded SeaLegacy (@sea_legacy), a collective of visual storytellers who document the biggest issues facing our oceans today. “My goal is to use my camera to connect people to the species of animals that need our help.”
On #WildlifeConservationDay, Paul offers this message: “I want people to understand that animals are all part of a complex ecosystem. You cannot dismiss an insect while pouring your love and attention into panda bears and baby white harp seals. We need to realize that entire ecosystems are connected, from the very top to the very bottom.”
Starting today, when people search for a hashtag associated with harmful behavior to animals or the environment, they will see a content advisory screen. We are committed to fostering a safer, kinder world both on Instagram and beyond.
Some of Skopje's highest buildings are seen above clouds in this picture taken from Vodno Mountain near Skopje, Republic of Macedonia on December 15th 2017. Skopje has been badly affected by a high level of air pollution. Credit: AFP/Getty Images/Robert Atanovski #Skopje#clouds#mountain#pollution#Macedonia
So I don’t normally post test shots, but this was pretty neat! I had never done a time lapse/Hyperlapse on the drone and wanted to try it out on the Inspire 2, Kinda cool, but now time to refine! Also a little Stranger Things music to make it 10x better!
Witness the making of the work Xavier Casalta was commissioned to produce for the exhibition 'Christian Dior: Designer of Dreams' celebrating our 70th anniversary. Portraying the famous facade of 30 Avenue Montaigne, its creation was an almost unfathomable exercise in exacting detail and indefatigable passion. You can pick your jaw up off the floor now!⠀