Astronomy Picture of the Day Archives

Brokenfriend · 07-13-2014, 01:05 AM

Here's another interesting photo combination.

2014 July 12:SN 1006 Supernova Remnant

BF

waves · 07-13-2014, 11:15 AM

Quote:

Originally Posted by Brokenfriend

Here's another interesting photo combination.

2014 July 12:SN 1006 Supernova Remnant

BF

archive link: http://apod.nasa.gov/apod/ap140712.html

Quote:

Explanation: A new star, likely the brightest supernova in recorded human history, lit up planet Earth's sky in the year 1006 AD. The expanding debris cloud from the stellar explosion, found in the southerly constellation of Lupus, still puts on a cosmic light show across the electromagnetic spectrum. In fact, this composite view includes X-ray data in blue from the Chandra Observatory, optical data in yellowish hues, and radio image data in red. Now known as the SN 1006 supernova remnant, the debris cloud appears to be about 60 light-years across and is understood to represent the remains of a white dwarf star. Part of a binary star system, the compact white dwarf gradually captured material from its companion star. The buildup in mass finally triggered a thermonuclear explosion that destroyed the dwarf star. Because the distance to the supernova remnant is about 7,000 light-years, that explosion actually happened 7,000 years before the light reached Earth in 1006. Shockwaves in the remnant accelerate particles to extreme energies and are thought to be a source of the mysterious cosmic rays.

Brokenfriend · 07-14-2014, 01:20 AM

Thank you Waves. BF

Brokenfriend · 07-31-2014, 02:02 AM

This is interesting.

2014 July 28 The Horsehead Nebula from Blue to Infrared

BF

Mari · 07-31-2014, 05:52 AM

Quote:

Originally Posted by Brokenfriend

This is interesting.

2014 July 28 The Horsehead Nebula from Blue to Infrared

BF

Hi, Steve,

I hope that you are well.

I will come back for that later if Waves does not get it.

M

waves · 07-31-2014, 07:14 AM

Quote:

Originally Posted by Brokenfriend

This is interesting.

2014 July 28 The Horsehead Nebula from Blue to Infrared

BF

Hi Steve! Good to see you I hope you are well!

Archive Link: http://apod.nasa.gov/apod/ap140728.html

Wow, that is impressive! It looks like a sand monster or something!

Quote:

Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The above image is a digital combination of images taken in blue, green, red, and hydrogen-alpha light from the Argentina, and an image taken in infrared light by the orbiting Hubble Space Telescope.

===============

Quote:

Originally Posted by Mari

I will come back for that later if Waves does not get it.

I got it!

Brokenfriend · 07-31-2014, 11:41 AM

Thank you Waves. A sand monster. LOL

BF

Brokenfriend · 08-06-2014, 02:50 AM

This is a close view of Saturn.

2014 August 06: Saturns Swirling Cloudscape

BF

waves · 08-06-2014, 06:28 AM

Quote:

Originally Posted by Brokenfriend

This is a close view of Saturn.

2014 August 06: Saturns Swirling Cloudscape

BF

Archive link: http://apod.nasa.gov/apod/ap140806.html

Quote:

Explanation: Acquiring its first sunlit views of far northern Saturn in late 2012, the Cassini spacecraft's wide-angle camera recorded this stunning, false-color image of the ringed planet's north pole. The composite of near-infrared image data results in red hues for low clouds and green for high ones, giving the Saturnian cloudscape a vivid appearance. Enormous by terrestrial standards, Saturn's north polar hurricane-like storm is deep, red, and about 2,000 kilometers wide. Clouds at its outer edge travel at over 500 kilometers per hour. Other atmospheric vortices also swirl inside the large, yellowish green, six-sided jet stream known as the hexagon. Beyond the cloud tops at the upper right, arcs of the planet's eye-catching rings appear bright blue.

Brokenfriend · 08-06-2014, 06:39 AM

Thank you Waves. I'm glad that I don't live on that stormy world. There's no oxygen,and the ground is questionable. BF

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