Saturday’s strong earthquake in Japan called ‘aftershock’ of deadly 2011 quake

No fatalities have been reported in the February 13, 2021 strong earthquake in Japan, which occurred off Japan’s east coast, near the epicenter of the 2011 9.0-magnitude Tohoku earthquake. Source: https://earthsky.org/earth/feb-13-2021-7-magnitude-quake-japan-aftershock-2011…

Astronomers find possible exoplanet-in-the-making within its own whirlpool

Astronomers have discovered a possible newly-born planet forming within its own “whirlpool” of dust and pebbles, in orbit around a young star 330 light-years from Earth. Source: https://earthsky.org/space/star-hd-163296-new-planet-seen-forming-within-whirlpool…

Why Amazon’s Echo Shines an Ominous Red Light When Its Microphone is Muted

This year Amazon followed up its cylindrical Echo (and its hockey puck-shaped Echo Dot) with a cloth-wrapped sphere-shaped Echo device. And Fast Company reports that one significant change was to the light pipe, “that glowing ring on top of the Echo that signals it’s talking or thinking. “For the fourth generation, that light pipe has been moved to the bottom of…

How the world came to understand black holes

Earlier this month, Roger Penrose, Reinhard Genzel, and Andrea Ghez split the 2020 physics Nobel Prize for decades of work on black holes. Click here to learn more about their monumental achievement and about the history of our understanding of these exotic objects in space. Source: https://earthsky.org/space/nobel-prize-3-astrophysicists-black-holess-penrose-genzel-ghez…

School bus-size asteroid to safely zoom past Earth

A small near-Earth asteroid (or NEA) will briefly visit Earth’s neighborhood on Thursday, Sept. 24, zooming past at a distance of about 13,000 miles (22,000 kilometers) above our planet’s surface. The asteroid will make its close approach below the ring of geostationary satellites orbiting about 22,000 miles (36,000 kilometers) away from Earth. Source: https://phys.org/news/2020-09-school-bus-size-asteroid-safely-earth.html…

What are white dwarf stars?

White dwarfs are dead stars. A single white dwarf contains roughly the mass of our sun in a volume no bigger than our planet. Our sun will become a white dwarf someday. Source: https://earthsky.org/astronomy-essentials/white-dwarfs-are-the-cores-of-dead-stars…

From star to solar system: How protoplanetary rings form in primordial gas clouds

Four-hundred fifty light-years from Earth, a young star is glowing at the center of a system of concentric rings made from gas and dust, and it is producing planets, one for each gap in the ring. Source: https://phys.org/news/2020-09-star-solar-protoplanetary-primordial-gas.html…

Japan’s Longest-Serving PM, Shinzo Abe, Resigns For Health Reasons

Late last night, it was rumored that Japan’s longest-serving prime minister, Shinzo Abe, would step down due to his struggle with ulcerative colitis. Abe confirmed the reports this morning, telling reporters that it was “gut wrenching” to leave many of his goals unfinished. He also apologized for stepping down during the pandemic. The Associated Press reports: Abe has had ulcerative colitis…

Today in science: Asaph Hall finds Mars moon Phobos

On this date in 1877, American astronomer Asaph Hall discovered the first small moon known to be orbiting Mars. Scientists now think this moon – called Phobos – is the latest incarnation of a cyclic ring-moon formation process that goes back billions of years. Source: https://earthsky.org/space/this-date-in-science-asaph-hall-discovers-a-moon-for-mars…

Astronomers spy a Milky Way look-alike 12 billion light-years away

This distant galaxy – SPT0418-47 – surprised astronomers by being organized enough to have a spinning disk and a galactic bulge, early in the history of our universe. Source: https://earthsky.org/space/alma-distant-milky-way-lookalike-galaxy-spt0418-47…