March 8 Black Holes Will Collide, Sun News

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March 8
Black Holes Will Collide, Sun News

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There are 2 black holes in this animation. Can you see them both? One is the object with a bright disk that's releasing a jet of material. The other is dark and orbiting a common center with the first black hole. Note how these massive objects distort the spacetime around them. Image via Caltech/ R. Hurt.


These 2 supermassive black holes will collide

Astronomers say they believe they've found the closest pair of supermassive black holes yet. The holes are separated by 2,000 astronomical units, or 2,000 times the Earth-sun distance. These 2 black holes are locked in a death spiral, drawing ever nearer toward a cataclysmic explosion. In 10,000 years these astronomers said - a blink of cosmic time - these 2 black holes will collide. Their fantastic merger will rock the fabric of space and time, sending gravitational waves across the universe as predicted 100 years ago by Albert Einstein. See a video and read about colliding black holes.

Sun news: CME might sideswipe Earth March 10

A coronal mass ejection (CME) that left the sun yesterday might reach Earth's magnetic field on March 10. The CME followed the eruption of a magnetic filament on the sun. Spaceweather.com reported yesterday: "... No sunspots were involved. The glancing blow could spark minor G1-class geomagnetic storms later this week." Sun news and images here.

Joro spiders to spread over East Coast

According to the website The Recovery Village, arachnophobia - the fear of spiders - is the most common fear in the United States. So prepare yourself. Because scientists at the University of Georgia said on March 3 that a new spider - the Joro spider, which arrived in the southeastern U.S. in 2013 - will eventually spread up and down the East Coast. This venomous spider can grow to the size of an adult's palm. Is your heart racing yet? Take a deep breath, because the invasion of this arachnid species might not be all that bad. Read more.












EarthSky’s lunar calendar is a unique and beautiful poster-sized calendar that provides the phases of the moon for every day of the year. It also notes each month’s new and full moons and shows the moon waxing from new to full and waning from full to new. Click here to read some helpful tips on using our lunar calendar. Don’t have one yet? Order yours today!






Lonely Alphard is the brightest star in Hydra

Alphard (Alpha Hydrae) is the brightest star in the largest constellation in the sky, Hydra the Water Snake. Despite its long length, Hydra's stars are mostly dim … except for Alphard. As a 2nd-magnitude star, Alphard shines on par with the stars of the Big Dipper. Known as the Heart of the Snake, Alphard is a precursor of Northern Hemisphere spring and Southern Hemisphere autumn. Read more.










Northern lights above the Arctic Circle

View at EarthSky Community Photos. | Alexander Krivenyshev captured this image of the aurora borealis, or northern lights, this past weekend over Utqiagvik (aka Barrow), Alaska, the northernmost U.S. city. Thank you, Alexander! Check out this video of an aurora in Alaska that triggered the doorbell camera that Brian Brettschneider shared on Twitter last Wednesday. According to Spaceweather.com, this weekend's auroral display: "… was caused by a high-speed stream of solar wind flowing from an equatorial hole in the sun's atmosphere. The gaseous material reached Earth on March 4 and sparked a series of G1-class geomagnetic storms on March 5 and 6. At the apex of the event, auroras crossed the Canadian border into the USA as far south as Keller, Washington (latitude +48 N)."

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