AstronomyTeacher

The Cool News: "The Great Wall of China is NOT particularly visible from space While at a low orbit, the Great Wall of China can certainly be seen from space but it is not unique in that regard. From a low orbit of the earth, many artificial objects are visible on the earth, not just the Great Wall of China. Highways, ships in the sea, dams, railroads, cities, fields of crops, and even some individual buildings. As to the claim that it%u2019s the only man-made object visible from the moon, Apollo astronauts have reported that they could not see any man-made object from the moon, not even the Great Wall."

Read the comments. Really geeky stuff.

BBC NEWS | Science/Nature | Nasa outlines manned Mars vision: "The US space agency envisages despatching a 'minimal' crew on a 30-month round trip to the Red Planet "

Universe Today : Neutron Star Seen Hurtling Out of the Milky Way: "Like a baseball struck by a bat, there's a neutron star out there that's going, going, gone. Discovered using the Chandra X-Ray Observatory, the neutron star appears to be the result of a lopsided supernova explosion. It's now hurtling away from the Milky Way faster than 4.8 million km/h (3 million mph). And it's never coming back."

Mankind 'shortening the universe's life' - Telegraph : "The startling claim is made by a pair of American cosmologists investigating the consequences for the cosmos of quantum theory, the most successful theory we have. Over the past few years, cosmologists have taken this powerful theory of what happens at the level of subatomic particles and tried to extend it to understand the universe, since it began in the subatomic realm during the Big Bang."

Tides trigger tremors deep inside the Earth: "A new mystery faces scientists who study stresses that trigger earthquakes both large or small: Even the rise and fall of the ocean's tides are strong enough to trigger pulses of underground tremors that periodically send seismic faults slowly slipping beneath the northwest coast, quake researchers have found."

Big bright puffball Holmes is a comet like no other

Comet Holmes finally makes the mainstream news.