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Monday, January 22, 2018

Jan 22 - Will Betelgeuse Explode?

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Will Betelgeuse explode someday?

Yes. Someday the star Betelgeuse will run out of fuel, collapse under its own weight, and then rebound in a spectacular supernova explosion. Someday ... but probably not soon.

How far is Betelgeuse?

Finding star distances isn't easy. Here's how it's done and why astronomers modified Betelgeuse's distance estimate.

Tonight … Waxing toward the super Blue Moon

This week's moon is getting closer to Earth, day by day. Links to the upcoming super Blue Moon eclipse, plus ... how to measure the moon's changing distance.

Watch 1st spacewalk of 2018 on Tuesday

It's the 1st spacewalk of 2018. Live TV coverage starts on Tuesday at 10:30 UTC (5:30 a.m. EST); translate to your time zone. The spacewalk begins around 12:10 UTC (7:10 a.m. EST).
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Help us keep presenting your world, and cosmos, to you.

Tonight … Waxing toward the super Blue Moon

Andy Bentley captured last night's waxing moon (~21.7% illuminated) through a misty sky.

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Sunrises this weekend

Enjoy these January sunrises, from EarthSky friends. This one is from Graham Telford in Bridlington, UK, who wrote that, on Sunday, he was "up and out before 7 a.m., walking down the frozen sand." More sunrises here.
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