[www.keralites.net] NASA Takes 300 Pictures Of The Sun Every Hour For 7 Hours, Releases Them In A Spectacular GIF

 

NASA's Solar Dynamics Observatory (SDO) has produced dizzying pictures of the sun by taking one picture every 12 seconds for seven hours. In a post about the event, NASA wrote, "SDO images appeared to show the sun spinning, as if stuck on a pinwheel".

According to our calculations NASA took 2100 pictures in seven hours. This exercise happens twice a year to help SDO take precise images of the star and "were the sun perfectly spherical, this would be a much simpler task". But since the sun is dynamic pictures reveal distortions.

Lina Tran wrote on the website saying that it's tough for SDO's Helioseismic and Magnetic Imager (HMI) to find the sun's edge when perfectly still so its biannual roll lets each part of the camera look at the entire perimeter of the sun, thus capturing the sun's shape more accurately.

Capturing the sun in this manner helps scientists better predict the sun's activities that can create hazards for satellites and astronauts travelling to space.

---

www.keralites.net

__._,_.___

---

Posted by: Fereshteh Jamshidi <fayjay81@yahoo.com>

---

Reply via web post

•

Reply to sender

•

Reply to group

•

Start a New Topic

•

Messages in this topic (1)

---

Save time and get your email on the go with the Yahoo Mail app

Get the beautifully designed, lighting fast, and easy-to-use Yahoo Mail today. Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

---

KERALITES - A moderated eGroup exclusively for Keralites...

To subscribe send a mail to Keralites-subscribe@yahoogroups.com.
Send your posts to Keralites@yahoogroups.com.
Send your suggestions to Keralites-owner@yahoogroups.com.

To unsubscribe send a mail to Keralites-unsubscribe@yahoogroups.com.

Homepage: http://www.keralites.net

Visit Your Group

• New Members 9

• Privacy • Unsubscribe • Terms of Use

.

__,_._,___