Astronomy Picture of the day (24 August)

Explosions from White Dwarf Star RS OphIllustration Credit & Copyright: David A. Hardy & PPARC Explanation: Spectacular explosions keep occurring in the binary star system named RS Ophiuchi. Every 20 years or so, the red giant star dumps enough hydrogen gas onto its companion white dwarf star to set off a brilliant thermonuclear explosion on the white dwarf‘s surface. At about 5,000 light years distant, the resulting nova explosions cause the RS … Read more

Astronomy Picture of the day (23 August)

Abell 3827: Cannibal Cluster Gravitational LensImage Credit: ESA/Hubble & NASA, R. Massey Explanation: Is that one galaxy or three? Toward the right of the featured Hubble image of the massive galaxy cluster Abell 3827 is what appears to be a most unusual galaxy — curved and with three centers. A detailed analysis, however, finds that these are three images of the same background … Read more

Silicon Nano Crystals Could Triple Solar Efficiency

Solar Power converts photons to electrons. For as long as solar power has existed, I’ve considered this to be a one-to-one relationship. A photon hits some sort of electrically unstable substance, and an electron jumps across some sort of barrier creating a current. I’ve never questioned that this is as good as we can do. … Read more

Transmitting Data Through LED Light Bulbs

LEDs are a fantastic technology. They are more efficient and less polluting than compact fluorescent light bulbs and come with a host of other advantages. But one advantage that is certainly new to us is the possibility of using them to transmit data. Or at least, so says the Smart Lighting research team at Boston … Read more

Solar Notebook go anywhere sustainably

Solar-powered laptops sure would be a great thing to have in mass production to (1) cut down on energy consumption and (2) not have to worry as much about the battery dying. One concept design that looks interesting is by Nikola Knezevic of Nikoladesign. Kenzevic’s solar-powered laptop design is said to have “complete power autonomy.” … Read more

What is the name of the closest spiral galaxy to our own Milky Way?

The Andromeda Galaxy is the closest spiral galaxy to our Milky Way Galaxy . It is also called galaxy Messier 31, or M31 , named after famous French astronomer Charles Messier (1730-1817).  The size of this galaxy is even bigger than our Milky Way Galaxy.  And also in the night Sky it is larger than … Read more

Stunning view of spiral galaxy by ESA Hubble

This jewel-bright image from the NASA/ESA Hubble Space Telescope shows NGC 1385, a spiral galaxy 68 million light-years away from Earth, which lies in the constellation Fornax. The image was taken with Hubble’s Wide Field Camera 3 (WFC3), which is often referred to as Hubble’s workhorse camera, thanks to its reliability and versatility. It was … Read more