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Old Apr 28th, 2015, 02:22 PM   #51
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An era coming to an end.

Out of fuel, Messenger spacecraft will slam into Mercury

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The NASA spacecraft that launched in 2004 from Cape Canaveral, Fla., and became the first to orbit Mercury in 2011 is on course to crash into the planet's surface April 30 at more than 8,700 mph.
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Old Apr 28th, 2015, 05:54 PM   #52
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Originally Posted by FeXL View Post
An era coming to an end.

Out of fuel, Messenger spacecraft will slam into Mercury
Yep - and Messenger has done some pretty cool science.

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Old May 12th, 2015, 12:39 PM   #53
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Further on Ceres.

Closest look yet at Ceres’ bright spots

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The Dawn spacecraft – which has now completed its first mapping orbit around the dwarf planet Ceres – acquired these closest-yet images of the mysterious bright spots on Ceres, known as Spot 5, on May 3 and 4, 2015. The distance from Ceres was 8,400 miles (13,600 kilometers). In this view, the brightest spots within a crater in Ceres’ northern hemisphere are revealed to be composed of many smaller spots. As of now, their exact nature remains unknown.
The number of craters is amazing.
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Old May 12th, 2015, 06:05 PM   #54
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Huh - I was expecting the next series of images to resolve those white spots... nice to have a mystery
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Old Dec 1st, 2015, 12:22 PM   #55
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Kepler Orrery IV

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ERROR: If you can see this, then YouTube is down or you don't have Flash installed.

All of the Kepler multi-planet systems (1705 planets in 685 systems as of 24 November 2015) on the same scale as the Solar System (the dashed lines). The size of the orbits are all to scale, but the size of the planets are not. For example, Jupiter is actually 11x larger than Earth, but that scale makes Earth-size planets almost invisible (or Jupiters annoyingly large). The orbits are all synchronized such that Kepler observed a planet transit every time it hits an angle of 0 degrees (the 3 o'clock position on a clock).
(Imgur)
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Old May 10th, 2016, 11:02 AM   #56
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This is a little bit mind-blowing.

Teen looks to stars to find lost Mayan city

A teenager from Quebec has discovered a hidden Mayan city, an accomplishment that proves his own theory that links the location of ancient cities with the position of the stars.

William Gadoury, 15, has received accolades by NASA, the Canadian Space Agency and the Japanese Space Agency, and his discovery is about to be disseminated in a scientific journal.

Passionate about the lost Mayan civilizations for several years, Gadoury analyzed 22 Mayan constellations and realized that if he connected on a map the stars of the constellations, the shape of each corresponded to the position of 117 Mayan cities. No scientist before had ever found such a correlation between the stars and the location of the Mayan cities.

Gadoury’s genius, however, was to analyze a 23rd constellation. It contained three stars and only two cities matched. According to his theory, it should point to a 118th Mayan city in a remote and inaccessible location near the coast in Belize, in the southern Yucatán Peninsula.

In 2005, the forest in this particular area was devastated by fire, making Mayan ruins more visible to satellite photographs. Analyses from satellites from various space agencies have revealed that there was indeed a pyramid and thirty buildings at the precise location identified by the young man. Not only has he discovered a new Mayan city, but it is one of the five largest on record.

(YucatanExpatLife / see also the Telegraph UK for details)
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Old May 10th, 2016, 12:09 PM   #57
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An amazing story, Mark.
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Old May 11th, 2016, 03:02 PM   #58
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Originally Posted by Dr.G. View Post
An amazing story, Mark.
.....or maybe not so much?

Experts Doubt That a Teen Found a Lost Maya City

As the remarkable story went viral yesterday, a number of experts spoke out, saying it’s highly unlikely that these features are those of a forgotten Maya settlement.

* * *

... they argue that the Maya people, though good astronomers, probably did not choose to settle in areas based on the positions of the stars.

“I applaud the young kid’s effort, and it’s exciting to see such interest in the ancient Maya and remote sensing technology in such a young person,” said Thomas Garrison, an anthropologist at the University of Southern California: Dornsife and an expert in remote sensing. “However, ground-truthing is the key to remote sensing research. You have to be able to confirm what you are identifying in a satellite image or other type of scene.”

Google Earth and satellite photos show what looks to be a cluster of structures. Or, as some experts contest, a “relic milpa”.

In this particular instance, Garrison says the rectangular nature of the feature and the secondary vegetation growing back within it are “clear signs” of a relic milpa. A milpa is a crop-growing system used throughout Mesoamerica,...

* * *

David Stuart, an anthropologist from the Mesoamerica Center-University of Texas at Austin agrees, but his words were less kind. At his Facebook page he referred to Gadoury’s work as “junk science.”

“Seeing such patterns is a rorschach process, since sites are everywhere, and so are the stars,” he wrote. “The square feature that was found on Google Earth is indeed man-made, but it’s an old fallow cornfield, or milpa.”

* * *

Based on these expert reactions, it seems unlikely that this Canadian teen’s green rectangles are lost Maya structures. But as Garrison pointed out, only a ground-based expedition to the area will confirm things one way or another. At the same time, while Gadoury’s enthusiasm and creativity should continue to warrant praise, the contributions of the Canadian Space Agency and from Armand LaRocque, the University of New Brunswick professor who corroborated the Gadoury’s research, deserve further scrutiny.

We’ve reached out to Gadoury, the Canadian Space Agency, as well as LaRocque for comment and will update this post if we hear back.
(Gizmodo)
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Old Jun 28th, 2016, 04:05 PM   #59
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What a truly amazing brain...

First universe modeling using Einstein's full theory of general relativity



Using software that incorporates all of the field theory equations developed by Einstein as part of his general theory of relativity, research teams from Europe and the United States have started developing a model of the universe that they claim will eventually provide the most precise and detailed representation of the cosmos ever created.

* * *

The pair of new codes are also claimed to be the first to use the complete general theory of relativity to help explain why there is a clumping of matter in some areas of space, while there is a distinct dearth of matter in others.

Einstein's theory, despite being over 100 years old, is still the foremost and best theory of gravity that we have. However, despite reliably predicting a range of cosmological phenomena, including the groundbreaking proof of the existence of gravity waves, the general theory of relativity equations involved are so complex that, until now, physicists have had to use simplified versions of the theory when looking at the mechanisms at play in the entire universe.

(Gizmag)
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Old Jun 30th, 2016, 12:19 AM   #60
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Take 15 minutes and watch this.

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