Category Archive 'Astronomy'

19 Aug 2017

Catch Monday’s Eclipse

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You can find the time for your location here.

10 May 2016

How Cool Is That?

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MayanCity

Gizmodo reports that a 15-year-old Canadian high school kid has located a lost Mayan city using star maps and Google Earth.

Using an unprecedented technique of matching stars to the locations of temples on Earth, a 15-year-old Canadian student says he’s discovered a forgotten Maya city in Central America. Images from space suggest he may actually be onto something.

William Gadoury, a teen from Saint-Jean-de-Matha in Lanaudière, developed an interest in archaeology after the publication of the Maya calendar announcing the end of the world in 2012. After spending hours pouring over diagrams of constellations and maps of known Maya cities, he noticed that the two appeared to be linked; the brightest stars of the constellations overlaid perfectly with the locations of the largest Maya cities. As reported in The Telegraph, no other scientist had ever discovered such a correlation. …

After studying 22 different constellations, Gadoury noticed that they neatly corresponded to the locations of 117 Mayan cities located in Mexico, Guatemala, Honduras, and El Salvador. When looking at a 23rd constellation, he was able to match two stars to known cities—but a third star remained unmatched. Using transparent overlays, Gadoury pinpointed a location deep in the thick jungles of the Yucatan Peninsula in Mexico.

“I did not understand why the Maya built their cities away from rivers, on marginal lands, and in the mountains,” explained Gadoury in Le Journal de Montreal. “They must have had another reason, and as they worshiped the stars, the idea came to me to verify my hypothesis. I was really surprised and excited when I realized that the most brilliant stars of the constellations matched the largest Maya cities.”

Read the whole thing.

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Original Post Updated: a number of people contend that the kid is wrong.

04 Aug 2015

Solar System

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15 Jul 2015

First High Resolution Photo of Pluto Raises Concern

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PlutoHighRes

07 Jul 2015

“Unequivocal Evidence” of Extraterrestrial Life on Comet

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Philae

Sky News:

Evidence of alien life is “unequivocal” on the comet carrying the Philae probe through space, two leading astronomers have said.

The experts say the most likely explanation for certain features of the 67P/Churyumov-Gerasimenko comet, such as its organic-rich black crust, is the presence of living organisms beneath an icy surface.

Rosetta, the European spacecraft orbiting the comet, is also said to have picked up strange “clusters” of organic material that resemble viral particles. …

“[D]ata coming from the comet seems to unequivocally, in my opinion, point to micro-organisms being involved in the formation of the icy structures, the preponderance of aromatic hydrocarbons, and the very dark surface.

“These are not easily explained in terms of pre-biotic chemistry.

“The dark material is being constantly replenished as it is boiled off by heat from the Sun. Something must be doing that at a fairly prolific rate.”

18 Oct 2013

J002E3

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Wikipedia:

J002E3 is the designation given to a supposed asteroid discovered by amateur astronomer Bill Yeung on September 3, 2002. Further examination revealed that the surface appeared to contain the paint used on the Apollo moon rockets. The object is probably the S-IVB third stage of the Apollo 12 Saturn V rocket (serial S-IVB-507).

Via Ratak Monodosico.

03 Jan 2012

Hubble Photo

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The Ant Nebula (Menzel 3): Fiery Lobes Protrude From Dying, Sun-like Star. click for larger image.

25 Apr 2007

Habitable Planet Discovered

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Only 20 light years away.

Daily Mail

The discovery was announced today by a team of European astronomers, using a telescope in La Silla in the Chilean Andes.

The Earth-like planet that could be covered in oceans and may support life is 20.5 light years away, and has the right temperature to allow liquid water on its surface.

This remarkable discovery appears to confirm the suspicions of most astronomers that the universe is swarming with Earth-like worlds.

We don’t yet know much about this planet, but scientists believe that it may be the best candidate so far for supporting extraterrestrial life.

The new planet, which orbits a small, red star called Gliese 581, is about one-and-a-half times the diameter of the Earth.

It probably has a substantial atmosphere and may be covered with large amounts of water – necessary for life to evolve – and, most importantly, temperatures are very similar to those on our world. …

This new planet – known for the time being as Gliese 581c – is a midget in comparison, being about 12,000 miles across (Earth is a little under 8,000 pole-to-pole).

It has a mass five times that of Earth, probably made of the same sort of rock as makes up our world and with enough gravity to hold a substantial atmosphere.

Astrobiologists – scientists who study the possibility of alien life – refer to a climate known as the Goldilocks Zone, where it is not so cold that water freezes and not so hot that it boils, but where it can lie on the planet’s surface as a liquid.

In our solar system, only one planet – Earth – lies in the Goldilocks Zone. Venus is far too hot and Mars is just too cold. This new planet lies bang in the middle of the zone, with average surface temperatures estimated to be between zero and 40c (32-102f). Lakes, rivers and even oceans are possible.

It is not clear what this planet is made of. If it is rock, like the Earth, then its surface may be land, or a combination of land and ocean.

Another possibility is that Gliese 581c was formed mostly from ice far from the star (ice is a very common substance in the Universe), and moved to the close orbit it inhabits today.

In which case its entire surface will have melted to form a giant, planet-wide ocean with no land, save perhaps a few rocky islands or icebergs.

The surface gravity is probably around twice that of the Earth and the atmosphere could be similar to ours.

24 Nov 2006

Ten Best Hubble Photographs

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Nebula NGC 2392 – the Eskimo

Daily Mail: Ten Best Hubble Photographs.

31 Oct 2006

Ghost Nebula

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A spooky nebula for Halloween.

photo

Hat tip to Karen Myers.


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