Thoughtful Posts and Articles

By Anil Kumar Gupta CEO @ HiTech-on-web.com Twitter @hitechit

The impact of humanity on the Earth better seen than from space, and never is it more noticeable than at night. Scientists use satellite photographs of artificial lights to chart the spread of urbanizing, but such photographs also tell another story, that of energy wastage, bathing urban skies in a permanent twilight. that obscures our view of the wider Universe we inhabit. Light pollution, as it is termed, is a growing concern to environmentalists as well as astronomers. The photograph at the right, taken from the Space Shuttle, offers a closer view of the bright lights on the northeastern seaboard of the United States, looking obliquely from the north. 

A Meteorite that struck in prehistoric times.

This meteorite struck near Hoba West, Namibia, in prehistoric times. Found in 1920, it weighs 60 tonnes, one of the largest objects to survive its impact.3. Found in the Atacama Desert, Chile, in the early19th century, this stony-iron meteorite was forged during the evolution of the Solar System. Larger meteorites, whether or not they are comets remnants, have had a steady, and often drastic, influence on the evolution of the planets -the Earth included. Some that enter the Earth's atmosphere never make it to the surface. Between1975 and 1992, American satellites recorded 136 explosions in the upper atmosphere, all probably small would-be meteorites.

Flare of the Sun (Solar Flare)

This prominence from Sunspots can measure as much as 50,000 kilometers (31,000 miles) across, July 1999 was particularly large. They are convenient indicators of the Sun's overall level of activity from the Sun. Erupting prominences, can affect and, therefore, of the influence the Sun will exert upon the Earth. For example, communications, navigation systems, radio signals from the Sun can be directly related to sunspots. In fact a graph even power grids, while also producing showing sunspot activity for a given period looks almost identical to a graph auroras visible in the night skies. that shows solar radio emission for the same period. Radio signals can tell us of the existence of an otherwise obscured sunspot, and the sunspot itself mayflower into a prominence or a flare that will disturb Earth's region of space. Both prominences and flares appear as violent displays of luminous solar debris and generally may be seen as clouds of ionized matter standing out from the Sun's limb or as characteristic markings on the disc itself. But there is a difference. Prominences linger much longer on the solar surface than flares. And prominences are seen as cascades of debris that may move downward along magnetic lines to the solar surface, sometimes in the form of arches that can span many tens of thousands of miles. Thus the material that forms a prominence is largely confined to the solar atmosphere. On the other hand , flares characteristically leap out from a single point of disturbance and form plasma blast. If it is in the path of this plasma tongue, the Earth will soon experience a magnetic storm with its attendant radio interference and aurora displays. It was also observed that aurora often followed a flare-up of explosions on the Sun's surface.

Google news for "The Milky Way Galaxy" is given below:

Mon, 21 May 2012 10:01:59 GMT Hubble spies edge-on beauty - Phys.Org Hubble spies edge-on beauty Phys.Org The galaxy, spanning some 100000 light-years, is seen exactly edge-on, and reveals its thick plane of dust and interstellar gas. While initially thought to look like our own Milky Way if seen from the side, more detailed surveys revealed the existence ... - and more »

Mon, 21 May 2012 18:13:41 GMT Newly discovered exoplanet is literally boiling away - Los Angeles Times Newly discovered exoplanet is literally boiling away Los Angeles Times A team headed by physicist Saul Rappaport of MIT discovered the planet using the Kepler Observatory, a space-based telescope that monitors more than 160000 stars in the Milky Way looking for exoplanets. If a star has a planet and the planet passes ... - and more »

Wed, 02 May 2012 17:43:21 GMT Ejected Milky Way Stars Found in Intergalactic Space - Voice of America DigitalJournal.com Ejected Milky Way Stars Found in Intergalactic Space Voice of America May 02, 2012 Ejected Milky Way Stars Found in Intergalactic Space VOA News Researchers in the United States say they have identified more than 675 rogue stars on the outskirts of our Milky Way galaxy that appear to have been ejected by the immense ... Intergalactic speed demon stars bid Milky Way farewell - Register Milky Way kicks out 700 stars, discovered in intergalactic space - DigitalJournal.com - all 5 news articles »

Thu, 17 May 2012 03:58:25 GMT Tekapo skies showcase Milky Way - Stuff.co.nz Tekapo skies showcase Milky Way Stuff.co.nz In a side project he shot the Milky Way footage in April, spending the entire night filming the galaxy as it moved across the sky. The film shows the Milky Way galaxy rising and passing over lake Tekapo at about 30 frames per second. Night Sky Timelapse: Milky Way Rising Over Lake Tekapo (VIDEO) - Huffington Post UK - all 4 news articles »

Thu, 10 May 2012 10:37:28 GMT Faintest Star Cluster Yet Discovered On Outskirts of Milky Way - Space.com Faintest Star Cluster Yet Discovered On Outskirts of Milky Way Space.com Scientists suspect it may have started out larger, but gradually lost stars, perhaps by passing through the Milky Way. [Stunning Photos of Our Milky Way Galaxy] "It's ridiculously dim," Yale astronomer Marla Geha, who collaborated on the project, ... - and more »

Thu, 17 May 2012 00:12:19 GMT Galaxy-hunting telescope to live on with private funding - Spaceflight Now Spaceflight Now Galaxy-hunting telescope to live on with private funding Spaceflight Now This new ultraviolet image from GALEX shows the Andromeda galaxy, or M31, the Milky Way's largest galactic neighbor 2.5 million light years away. The mosaic of Andromeda, which spans 260000 light years across, was stitched together from 11 separate ... NASA Lends Galaxy Evolution Explorer to Caltech - Jet Propulsion Laboratory NASA lends ultraviolet space telescope to Caltech - Phys.Org NASA mission to go on with private funding - UPI.com - Popular Science - - Space News - all 13 news articles »

Mon, 21 May 2012 02:05:28 GMT Herschel Space Observatory study reveals galaxy-packed filament - Space Daily Herschel Space Observatory study reveals galaxy-packed filament Space Daily The amount of infrared light suggests that the galaxies in the filament are cranking out the equivalent of about 1000 solar masses (the mass of our sun) of new stars per year. For comparison's sake, our Milky Way galaxy is producing about one solar ... Herschel Space Observatory Finds Galaxy-packed Supercluster - RedOrbit - all 8 news articles »

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