Related topics: james webb space telescope · galaxies · nasa · earth · stars

Astronomers decode Milky Way's violent birth

The Milky Way gobbled up a galaxy one quarter of its mass 10 billion years ago in a "violent collision" that didn't fully settle for eons, astronomers said in new research published Monday.

Hawaii telescope protesters don't back down after arrests

Protesters didn't back down from their long-running effort to stop construction of a $1.4 billion telescope, blocking a road Thursday to the top of a mountain sacred to some Native Hawaiians a day after authorities arrested ...

NASA's Webb Telescope shines with American ingenuity

To send humans to the Moon 50 years ago, an entire nation rose to the challenge. Surmounting countless hurdles, inventing new technologies while staring into the face of the unknown, NASA successfully pioneered multiple lunar ...

Police arrest Hawaiian protesters trying to block telescope

Police arrested elderly protesters, some using wheelchairs and canes, as they blocked a road Wednesday to Hawaii's highest peak to try to stop construction of a giant telescope on land some Native Hawaiians consider sacred.

Why the moon is such a cratered place

Look up on a clear night and you can see some circular formations on the face of our lunar neighbour. These are impact craters, circular depressions found on planetary surfaces.

Telescope viewing suspended as protesters block Hawaii road

Astronomers have indefinitely stopped looking through 13 existing telescopes at the summit of Mauna Kea in Hawaii while protesters block the road downslope in an attempt to prevent the construction of a giant new observatory.

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Telescope

A telescope is an instrument designed for the observation of remote objects by the collection of electromagnetic radiation. The first known practically functioning telescopes were invented in the Netherlands at the beginning of the 17th century. "Telescopes" can refer to a whole range of instruments operating in most regions of the electromagnetic spectrum.

The word "telescope" (from the Greek tele = 'far' and skopein = 'to look or see'; teleskopos = 'far-seeing') was coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei. In the Starry Messenger Galileo had used the term "perspicillum".

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