Categories: Hubble

Just for You: A Necklace from Hubble

[/caption]

Awww, how nice of the Hubble Space Telescope, providing us all with a little cosmic bling in this great new view of the Necklace Nebula! From the image, it’s quite obvious why this object carries the name it does (and who wants to call it by its technical name PN G054.2-03.4, anyway?). The Necklace Nebula is a recently discovered planetary nebula, the glowing remains of an ordinary, Sun-like star. You’d need to have a fairly large neck to wear this necklace, as the nebula consists of a bright ring measuring 12 trillion miles wide, dotted with dense, bright knots of gas that resemble diamonds in a necklace.

How did this unique nebula originate? A long time ago, (about 10,000 years) in an aging binary star system far away (15,000 light-years from Earth) one of the old stars ballooned to the point where it engulfed its companion star. The smaller star continued orbiting inside its larger companion, increasing the giant’s rotation rate.

The bloated companion star spun so fast that a large part of its gaseous envelope expanded into space. Due to centrifugal force, most of the gas escaped along the star’s equator, producing a ring. The embedded bright knots are dense gas clumps in the ring.

The pair is so close, only a few million miles apart, they appear as one bright dot in the center. The stars are furiously whirling around each other, completing an orbit in a little more than a day.

The Necklace Nebula is located in the constellation Sagitta. In this composite image, taken on July 2, Hubble’s Wide Field Camera 3 captured the glow of hydrogen (blue), oxygen (green), and nitrogen (red).

Thanks Hubble for the new cosmic jewelry!

Want a larger version of this bling? See the HubbleSite for more info.

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at https://twitter.com/Nancy_A and and Instagram at and https://www.instagram.com/nancyatkinson_ut/

Recent Posts

The United States announces a stop to testing Anti-Satellite Weapons

The United States Government has declared that it will no longer be performing tests of…

22 hours ago

Mystery Rocket Crash Site, ISS Independence, Space Nuclear Power

NASA teases JWST images, Rocket Lab launches CAPSTONE, mystery rocket's crash site found on the…

2 days ago

The Solar System is Stable for at Least the Next 100,000 Years

It’s nice to have a feel-good story every once in a while, so here’s one…

2 days ago

Most Black Holes Spin Rapidly. This one… Doesn’t

A Chandra X-ray Observatory view of the supermassive black hole at the heart of quasar…

3 days ago

Tidal Heating Could Make Exomoons Much More Habitable (and Detectable)

A new study shows how the study of tidal heating in exomoons could greatly expand…

3 days ago

Red Supergiant Stars Bubble and Froth so Much That Their Position in the Sky Seems to Dance Around

Making a 3D map of our galaxy would be easier if some stars behaved long…

3 days ago