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Boyd Densmore
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Father, Technical Enthusiast, Analyst
Father, Technical Enthusiast, Analyst

144 followers
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I now have something to do this Friday!
Finding your size this #BlackFriday? For us, it's #BlackHoleFriday and black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mountain. Mass is the amount of matter, or "stuff," in an object.

Another kind of black hole is called "stellar." Its mass can be up to 20 times more than the mass of the sun. There may be many, many stellar mass black holes in Earth's galaxy, the Milky Way.

The largest black holes are called "supermassive." These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.

This image of Sagittarius A and the surrounding region is from the Chandra X-Ray Observatory and is based on data from a series of observations lasting a total of about one million seconds, or almost two weeks. Such a deep observation has given scientists an unprecedented view of the supernova remnant near Sagittarius A and the lobes of hot gas extending for a dozen light years on either side of the black hole. 

Image Credit: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al. 
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Science demonstration with 1500 ping pong balls

Take a plastic pop bottle full of liquid nitrogen, cap tightly, drop into garbage can with containing a few gallons of warm water, fill remaining space with ping pong balls, and wait a couple moments!

Thanks to Plymouth University and Roy Lowry for the original video & demo, and "don't try this at home!"

Science demonstration: explosion & 1500 ping pong balls
#STEM   #scienceeveryday   #sciencegifs  
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I just noticed this game in the Play Store. Seems pretty cool.
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I have to say, I'm loving this auto-awesome feature. Thanks Google! I wouldn't even have remembered I had this sequence of pics without this!

Also, cutest kitty ever!
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Amazing, to think what we'll be able to discover with new information like this in the near future..
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I love this guy!  If only he weren't on the back of a stall door...  Ain't nobody wants that watchin'!
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