The Sun rises again

Bad Astronomy
The entire universe in blog form
Aug. 4 2010 6:55 PM

The Sun rises again

Our nearest star has woken up for real and for sure. After several years of stubborn silence, the Sun has unleashed several fairly big explosions of material. Called Coronal Mass Ejections, or CMEs, these gigantic events blast out hundreds of billions of tons of matter into space. They create vast interplanetary shock waves, and when they reach the Earth can cause all sorts of havoc. They are different from solar flares, but have similar origins in the Sun's magnetic field.

sdo_cme_aug2010

Phil Plait Phil Plait

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!  

Advertisement

NASA's recently-launched Solar Dynamics Observatory caught the action mid-eruption. This image shows million-degree-hot gas blasting off the surface, entangled in the Sun's strong magnetic field. The most recent CMEs probably won't do much more than give us pretty aurorae -- they've already been spotted -- which is good (worse effects are the loss of satellites and potential blackouts on Earth). In fact, if you live in the far north or south you may be able to see the light show.

You can read more about this at Orbiting Frog, SpaceWeather (with pictures!), Universe Today, and pretty much every other space blog on the planet. I'm probably too far south and in far too light-polluted skies to see, but give it a try if you can. Aurorae can be quite spectacular.

But if you miss it, don't fret: I'm sure we'll get lots of other opportunities. The Sun is gearing up for the peak of its cycle in the next three years or so, and there will be plenty of chances to watch as our sky reacts.

Image credit: NASA/SDO

TODAY IN SLATE

Politics

Smash and Grab

Will competitive Senate contests in Kansas and South Dakota lead to more late-breaking races in future elections?

Stop Panicking. America Is Now in Very Good Shape to Respond to the Ebola Crisis.

The 2014 Kansas City Royals Show the Value of Building a Mediocre Baseball Team

The GOP Won’t Win Any Black Votes With Its New “Willie Horton” Ad

Sleater-Kinney Was Once America’s Best Rock Band

Can it be again?

Technocracy

Forget Oculus Rift

This $25 cardboard box turns your phone into an incredibly fun virtual reality experience.

One of Putin’s Favorite Oligarchs Wants to Start an Orthodox Christian Fox News

These Companies in Japan Are More Than 1,000 Years Old

Trending News Channel
Oct. 20 2014 6:17 PM Watch Flashes of Lightning Created in a Lab  
  News & Politics
Politics
Oct. 20 2014 8:14 PM You Should Be Optimistic About Ebola Don’t panic. Here are all the signs that the U.S. is containing the disease.
  Business
Moneybox
Oct. 20 2014 7:23 PM Chipotle’s Magical Burrito Empire Keeps Growing, Might Be Slowing
  Life
Dear Prudence
Oct. 21 2014 9:18 AM Oh, Boy Prudie counsels a letter writer whose sister dresses her 4-year-old son in pink tutus.
  Double X
The XX Factor
Oct. 20 2014 6:17 PM I Am 25. I Don't Work at Facebook. My Doctors Want Me to Freeze My Eggs.
  Slate Plus
Tv Club
Oct. 20 2014 7:15 AM The Slate Doctor Who Podcast: Episode 9 A spoiler-filled discussion of "Flatline."
  Arts
Brow Beat
Oct. 21 2014 10:10 AM Where Do I Start With Sleater-Kinney?
  Technology
Future Tense
Oct. 21 2014 9:39 AM The International-Student Revolving Door Foreign students shouldn’t have to prove they’ll go home after graduating to get a visa.
  Health & Science
Bad Astronomy
Oct. 21 2014 7:00 AM Watch the Moon Eat the Sun: The Partial Solar Eclipse on Thursday, Oct. 23
  Sports
Sports Nut
Oct. 20 2014 5:09 PM Keepaway, on Three. Ready—Break! On his record-breaking touchdown pass, Peyton Manning couldn’t even leave the celebration to chance.