Blog posts tagged with sun

Posts in the past four weeks

May 29 2016
14:20 UTC

NASA SDO Year 6 in Ultra-HD

... coursing through the sun's atmosphere, the corona. SDO's sixth year in orbit was no exception. This video shows that entire sixth year -- from Jan. 1, 2015, to Jan. 28, 2016, as one time-lapse sequence. At full quality on YouTube, this video is ultra-high definition 3840x216

Posted by OrbitalHub

May 26 2016
17:49 UTC

NASA's SDO Peers Into Huge Coronal Hole

... low-density regions of the sun's atmosphere, known as the corona. Because they contain little solar material, they have lower temperatures and thus appear much darker than their surroundings. Coronal holes are visible in certain types of extreme ultraviolet light, which is typically invisible to ou

Posted by astronomy cmarchesin

May 25 2016
16:16 UTC

Space Weather Causing Martian Atmospherics

Strange plumes in Mars' atmosphere first recorded by amateur astronomers four year ago┬have planetary scientists still scratching their heads. But new data from European Space Agency's orbiting Mars Express┬points to coronal mass ejections from the Sun as the culprit. On two occasions in 2012 amateurs photographed cloud-like features rising to altitudes of over 155 miles (250 km) above the same region of Mars. By comparison, similar features seen in the past haven't exceeded 62 miles (100 k

Posted by Universe Today

May 18 2016
18:45 UTC

Friendly Giants Have Cozy Habitable Zones Too

It is an well-known fact that all stars have a lifespan. This begins with their formation, then continues through their Main Sequence phase (which constitutes the majority of their life) before ending in death. In most cases, stars will swell up to several hundred times their normal size as they exit the Main Sequence phase of their life, during which time they will likely consume any planets that orbit closely to them. However, for planets that orbit the star at greater distances (beyond the sys

Posted by Universe Today

May 14 2016
14:49 UTC

Mercury Transit Recorded by SDO

... between Earth and the sun in a rare astronomical event known as a planetary transit. The 2016 Mercury transit occurred on May 9, between roughly 7:12 a. m. and 2:42 p. m. EDT. Please visit OrbitalHub to read more...

Posted by OrbitalHub

May 10 2016
20:40 UTC

Watch Mercury Transit the Sun in Multiple Wavelengths

On May 9, 2016, Mercury passed directly between the Sun and Earth. No one had a better view of the event than the space-based Solar Dynamics Observatory, as it had a completely unobstructed view of the entire seven-and-a-half-hour event! This composite image, above, of Mercury's journey across the Sun was created with visible-light images from the Helioseismic and Magnetic Imager on SDO, and below is a wonderful video of the transit, as it includes views in several different wavelenths (and al

Posted by Universe Today

May 08 2016
16:55 UTC

Give Mom the Aurora Tonight / Mercury Transit Update

Simple choices can sometimes lead to dramatic turns of events in our lives.┬Before turning in for the night last night, I opened the front door for one last look at the night sky. A brighter-than-normal auroral arc arched over the northern horizon. Although no geomagnetic activity had been forecast, there was something about that arc that┬hinted of possibility. It was 11:30 at the time, and it would have been easy to go to bed, but I figured one quick drive north for a better look couldn't hurt

Posted by Universe Today

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