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From hubble's eye

he Hubble Space Telescope (HST) is a space telescope that was carried into orbit by the space
shuttle in April 1990. It is named after the American astronomer  Edwin Hubble. Although not the first
space telescope, Hubble isone of the largest and most versatile, and is well-known as both a vital
research tool and a public relations boon for astronomy.

The HST is a collaboration between NASA and the European Space Agency, and is one of NASA's Great
Observatories, along with
the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope.

Space telescopes were proposed as early as 1923.

Hubble was funded in the 1970s, with a proposed launch in 1983, but the
project was beset by technical delays, budget problems, and the Challenger disaster.

When finally launched in 1990, scientists found that the main mirror had been ground incorrectly,
severely compromising the telescope's capabilities. However, after a servicing mission in 1993,
the telescope was restored to its intended quality. Hubble's orbit outside the distortion of Earth's
atmosphere allows it to take extremely sharp images with almost no background light.

Hubble's Ultra Deep Field image, for instance, is the most detailed visible-light image ever made
of the universe's most distant objects.

Many Hubble observations have led to breakthroughs in astrophysics, such as accurately determining
the rate of expansion of the universe.

Hubble is the only telescope ever designed to be serviced in space by astronauts.

Four servicing missions were performed from 1993–2002, but the fifth was canceled on safety grounds
following the Space Shuttle Columbia disaster.

However, after spirited public discussion, NASA administrator Mike Griffin approved one final servicing
mission, completed in 2009.

The telescope is now expected to function until at least 2014, when its successor,
the James Webb Space Telescope (JWST), is due to be launched.

to deepen

from hubble's eye


More Dirtiest river in the world

his are very dirty place in the world!


10. Riachuelo River - Argentina

La Matanza River, (in English: The Slaughter River) better known as El Riachuelo (in English: The Little River),
is a water course of 64 km (40 mi) in Argentina, that originates in the Buenos Aires Province and defines
the southern boundary of the Buenos Aires federal district.

The Spanish word boca (in English: river mouth) gives the name to the La Boca neighbourhood, and brought
about the Boca Juniors football club, located near the place where the river flows into the Río de la Plata

Bridge on Riachuelo-Matanza river
From its source down to La Noria Bridge on Avenida General Paz, the river is usually referred to as
Río La Matanza,and from that point onwards as Riachuelo.
In its basin of 2,240 km2 (865 sq mi) live approximately 3.5 million people.

The south-easterly storm wind, known as Sudestada, hinders the waters of the Riachuelo from
reaching the  Río de la Plata, producing frequent flooding in low-lying areas like La Boca and Barracas.
Since 1995 a number of flood management projects have been carried out to prevent such occurrences.

The watercourse receives large amounts of industrial waste from the numerous factories along the
reiverside, especially tanneries, which makes the Riachuelo a polluted river.
Among the most dangerous contaminants are heavy metals and waste water from the basin's
saturated layers.

Its main tributaries are the Cañuelas, Chacón and Morales streams in the Province of Buenos Aires,
and the Cildánez stream (currently piped) in the Greater Buenos Aires urban area.

In 1993 President Menem's Secretary of Environment María Julia Alsogaray presented a 3 year project
to clean up the Riachuelo that was approved, but never started, let alone concluded.
The former civil servant, daughter of Álvaro Alsogaray,is being prosecuted for misappropriation
of those public funds.

According to Argentine newspaper Página/12, of the $250 million dollar budget, only $90 million remain.
$6 million were lost in punitive interests, $150 million were destined to unrelated social projects, and only
$1 million was used for the actual cleanup.
Critics have also noted that this cleanup was in vain, as all that was done was to remove sunken ship hulls,
but nothing was doneto prevent newly abandoned ships from sinking.

More dirtiest river in the world


Numbers History

volution of numbers

numbers history


Inusual and funny lamps

o you want one in your house?

strange lamps

Flower from paper

tunning sequence , view and comment!

flower from paper

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