Claudio Davi

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Spacewatch: Solar maximum

There is no greater influence on the Earth and its space environment than that of our local star, the Sun. The level of solar activity, as indicated …

Water Worlds, Tatooines, and Earth Twins: Planet-Hunting Kepler Telescope's Greatest Hits

Author: Adam Mann<p>02:24 pm

Space Tourism's Black Carbon Problem

The industry and the F.A.A. say the climate effects of flying civilians into space will be negligible, but some scientists fret about the accumulation of black carbon in the stratosphere.<p><i>This story is part of a special PopularScience.com series on the future of energy.</i><p>Virgin Galactic proudly touts …

WIRED Space Photo of the Day 2013

PhysicsWhy Do You Feel Lighter at the Top of a Ferris Wheel?<p>Author: Rhett AllainRhett Allain<p>EcologyHow Plastic Straws Slip Through the Cracks of …

Nasa's Kepler telescope hobbled by faulty wheel

<b>The planet-hunting space telescope Kepler has been hobbled by a broken wheel, say scientists at Nasa.</b><p>Two of four reaction wheels are now faulty. At least three are needed to orient the telescope correctly.<p>"I wouldn't call Kepler down and out just yet," said Nasa administrator John Grunsfeld, saying …

APOD: Four X-class Flares (2013 May 16) Image Credit: NASA, Solar Dynamics Observatory, GSFC http://apod.nasa.gov/apod/ap130516.html Explanation: Swinging around the Sun's eastern limb on Monday, a group of sunspots labeled active region AR1748 has produced the first four X-class solar flares of 2013 in less than 48 hours. In time sequence clockwise from the top left, flashes from the four were captured in extreme ultraviolet images from the Solar Dynamics Observatory. Ranked according to their peak brightness in X-rays, X-class flares are the most powerful class and are frequently accompanied by coronal mass ejections (CMEs), massive clouds of high energy plasma launched into space. But CMEs from the first three flares were not Earth-directed, while one associated with the fourth flare may deliver a glancing blow to the Earth's magnetic field on May 18. Also causing temporary radio blackouts, AR1748 is likely not finished. Still forecast to have a significant chance of producing strong flares, the active region is rotating into more direct view across the Sun's nearside. http://www.nasa.gov/mission_pages/sunearth/news/News051513-ar1748.html Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=130516 Starship Asterisk* • On This Day in APOD http://asterisk.apod.com/view_retro.php?date=0516

Failure of Nasa's Kepler telescope puts search for another Earth in peril

Nasa's hunt for other planets that could harbour life faces a setback: its Kepler space telescope is broken and, since it is in orbit around the Sun, …

Chris Hadfield's photographs of Earth from space – in pictures

http://www.theguardian.com/science/gallery/2013/may/13/chris-hadfield-space-in-pictures<p>720<p>During his five months in space onboard the International …

Monster radiation burst from Sun

http://vod-pro-ww-live.akamaized.net/mps_h264_hi/public/news/science_environment/978000/978353_h264_1500k.mp4?__gda__=1534397122_844791e6df6114c059a83b8a76e37690<p><b>The Sun has unleashed its most powerful eruption of 2013 so far.</b><p>The solar flare - a sudden release of radiation - peaked at 1705 BST on …

Chris Hadfield: astronaut, troubadour, tweeter – and a true Space Oddity

There was danger, hard graft, and the usual antics of life in orbit, but for millions of onlookers the latest mission to the International Space …

ISS commander Chris Hadfield returns to Earth - video

Chris Hadfield, commander of the International Space Station, who became an internet sensation after his rendition of David Bowie's Space Oddity, …

Astronauts 'space walk' outside the International Space Station – video

A pair of astronauts prepare to leave the confines of the International Space Station on Saturday to fix an ammonia leak at the site. The pair are …

International Space Station astronauts hopeful that they have stopped leak

Astronauts making a rare, hastily planned spacewalk replaced a pump outside the International Space Station on Saturday in the hope of plugging a …

NASA Mars Curiosity Rover Report -- May 9, 2013

Opinion: Forget the Moon. Let's Go to Mars.

Buzz Aldrin says the Red Planet should be humankind's next destination.<p><i>Editor's Note:</i> <i>National Geographic is bringing together astronaut Buzz Aldrin and mountaineer Conrad Anker for a Google+ Hangout on Monday, May 20 at 2 pm ET (7 p.m. UTC). Post your questions below using #LetsExplore.</i><p><b>As an Apollo</b> …