Milky Way's Giant Black Hole 'Awoke From Slumber' 300 Years Ago

Milky Way's giant black hole awoke from slumber 300...
Using NASA, Japanese, and European X-ray satellites, a team of Japanese astronomers has discovered that our galaxy's central black hole let loose a powerful flare three centuries ago.

Black Hole Discovered In Center Of Enigmatic Omega...
Omega Centauri has been known as an unusual globular cluster for a long time. It turns out that the explanation behind Omega Centauri's peculiarities may be an elusive intermediate-mass black...

NASA scientists identify smallest known black hole
Using a new technique, two NASA scientists have identified the lightest known black hole. With a mass only about 3.8 times greater than our Sun and a diameter of only 15 miles, the black hole...

Celestron Research Microscope
Our finest biological microscope. It uses an adjustable illuminator with an illuminator with an Abbe 1.25 condenser, iris diaphragm, filters, and holder. The built-in mechanical stage is...

Four Laws That Drive the Universe
The laws of thermodynamics drive everything that happens in the universe. From the sudden expansion of a cloud of gas to the cooling of hot metal, and from the unfurling of a leaf to the...