Polar Regions

2015-08-08

Polar Regions In a rapidly changing Arctic, polar bears are shifting to areas with more sea ice. Their genes are on the move, too.

In a rapidly changing Arctic, polar bears are shif...

BethMyers

For a laugh

2015-08-06

For a laugh we all do this

we all do this

luvJoeyEricksen

For a laugh

2015-08-06

For a laugh LOL lookalike!!!

LOL lookalike!!!

12897hiliarymcfee

Interior Design

2015-08-06

Interior Design Selected from Instagram’s endless design inspiration—see Interior Design’s 20 most loved posts this week: http://bit.ly/1vDdGB2

Selected from Instagram’s endless design inspirati...

Patrickjefferson

For a laugh

2015-08-04

For a laugh HUE JACKMAN! That kid is a genius!

HUE JACKMAN! That kid is a genius!

Ali.soni

Bikini

2015-08-04

Bikini Meet Zoi Mantzakanis, the newest 2016 SI Swimsuit hopeful.

Meet Zoi Mantzakanis, the newest 2016 SI Swimsuit ...

Adrianpaul

Bikini

2015-08-04

Bikini Have you seen Samantha Hoopes' Carl's Jr. commercial? 

GO. WATCH. NOW.

Have you seen Samantha Hoopes' Carl's Jr. commerci...

Adrianpaul

Bikini

2015-08-02

Bikini I like me..

I like me..

None

Europe

2015-07-29

Europe Grand Canal in Venice

Grand Canal in Venice

Don Coreleone

Coffee

2015-07-25

Coffee

Derrick

Cricket

2015-07-24

Cricket The triangular series to be played between Australia, India and England would hint at what to expect in the coveted Cup in terms of conditions, the form of three teams...

The triangular series to be played between Austral...

333Cristianbolanos

Coffee

2015-07-23

Coffee Apple die heart fans?

Apple die heart fans?

Edward_913

Gourmet

2015-07-20

Gourmet Chicken Bacon Ranch Pasta Bake
https://myfoodies.com/rec…/chicken-bacon-ranch-pasta-bake-2/

Chicken Bacon Ranch Pasta Bake https://myfoodies....

ammar187

Astronomy

2015-07-16

Astronomy What Is This Strange Object At The Center Of Our Galaxy?

Like most galaxies, the center of the Milky Way contains a supermassive black hole. And now astronomers have discovered a gas cloud that made a tight orbit around our black hole, called Sagittarius A*, over 10 years ago. They’ve dubbed the object G1. 

In 2011, researchers from Max Planck Institute for Extraterrestrial Physics detected a gas cloud they called G2, but not everyone agrees that the object was a gas cloud. Some say G2 is a star surrounded by a layer of dust and gas, Space.com explains: When G2 made its closest approach to the black hole this summer, it wasn’t torn apart, suggesting that it’s a solid body. However, according to the Max Planck team, a gas cloud could have stayed intact. They argue that G2 was once part of a larger gas streamer that broke up into smaller gas clouds, which all follow the same path -- like pearls on a string. Identifying additional gas clouds following G2’s path could strongly support their claim. 

In this new work, a team led by Max Planck’s Oliver Pfuhl and Stefan Gillessen tracked the object’s ongoing disruption by the black hole’s gravitational field using deep infrared observations at the Very Large Telescope. They were surprised to find that a faint and blurry object had already passed the point of closest approach to the black hole in 2001. “Already a decade ago, another gas cloud -- which we now call G1 -- has been observed in the central region of our galaxy,” Gillessen says in a news release. “We explored the connection between G1 and G2 and find an astonishing similarity in both orbits.” That similarity suggests that G1 is about 13 years ahead of G2.

So, the scientists fed this information into a model for a combined orbit. “Our basic idea is that G1 and G2 might be clumps of the same gas streamer,” Pfuhl explains. “In this case, we should be able to simultaneously fit both data sets and, indeed, our model captures the G1 and G2 orbits remarkably well.”



Above are the gas clouds G1 (blue) and G2 (red) at the center of the Milky Way. The spherical cloud has been stretched by the black hole’s gravitational field. The red side approaches the black hole (indicated with a cross) at velocities of a few thousand kilometers per second; the blue part has already passed its closest distance to the black hole and is moving away again. The solid line shows the best-fit common orbit for the two gas clouds, and the dashed line shows the orbit of S2, the star with the best known orbit. 

A likely source for both G1 and G2, they think, could be clumps in the wind of one of the massive disk stars. The new findings will be published in the Astrophysical Journal, and it appears online at arXiv now.

What Is This Strange Object At The Center Of Our G...

B6 Official

Yoga

2015-07-16

Yoga

Sweet self