Heavens

Sun emits a mid-level solar flare

Sun emits a mid-level solar flare

The sun emitted a mid-level solar flare, peaking at 9:03 a.m. EDT on April 18, 2014, and NASA's Solar Dynamics Observatory captured images of the event. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.

First Earth-size planet is discovered in another star's habitable zone

First Earth-size planet is discovered in another star's habitable zone

A team of astronomers that includes Penn State scientists has discovered the first Earth-size planet orbiting a star in the "habitable zone" -- the distance from a star where liquid water might pool on the surface of an orbiting planet. The discovery was made with NASA's Kepler Space Telescope. The discovery of this Earth-size planet, now named Kepler-186f, confirms -- for the first time -- that planets the size of Earth exist in the habitable zone of stars other than our Sun.

Vitamin B3 might have been made in space, delivered to Earth by meteorites

Vitamin B3 might have been made in space, delivered to Earth by meteorites

Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis by NASA-funded researchers. The result supports a theory that the origin of life may have been assisted by a supply of key molecules created in space and brought to Earth by comet and meteor impacts.

Bright points in sun's atmosphere mark patterns deep in its interior

Bright points in sun's atmosphere mark patterns deep in its interior

Like a balloon bobbing along in the air while tied to a child's hand, a tracer has been found in the sun's atmosphere to help track the flow of material coursing underneath the sun's surface.

First potentially habitable Earth-sized planet confirmed by Gemini and Keck observatories

First potentially habitable Earth-sized planet confirmed by Gemini and Keck observatories

"The Keck and Gemini data are two key pieces of this puzzle," says Quintana. "Without these complementary observations we wouldn't have been able to confirm this Earth-sized planet."

A cross-section of the universe

A cross-section of the universe

An image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. They range from cosmic near neighbours to objects seen in the early years of the Universe. The 14-hour exposure shows objects around a billion times fainter than can be seen with the naked eye.

Testing protocols in Internet of Things by a formal passive technique

Testing protocols in Internet of Things by a formal passive technique

Protocol conformance and performance testing are two branches of testing designed to determine compliance and performance of protocol implementations to their standard. Dr. CHE Xiaoping and Dr. MAAG Stephane from Laboratory UMR 5157 of French Centre national de la recherché scientifique (CNRS) focus on converging these two kinds of testing in a same formal approach. After several years of innovative research, they eventually created a formal approach to formally specify conformance and performance requirements.

Red moon at night, stargazer's delight

Red moon at night, stargazer's delight

Monday night's lunar eclipse proved just as delightful as expected to those able to view it. On the East Coast, cloudy skies may have gotten in the way, but at the National Science Foundation's National Optical Astronomy Observatory (NOAO) near Tucson, Ariz., the skies offered impressive viewing, as seen from the pictures provided here.

Kepler astronomers discover new rocky planet that may have liquid water

SAN FRANCISCO -- San Francisco State University astronomer Stephen Kane and an international team of researchers have announced the discovery of a new rocky planet that could potentially have liquid water on its surface.

Astronomers discover Earth-sized planet in habitable zone

Notre Dame astrophysicist Justin R. Crepp and researchers from NASA working with the Kepler space mission have detected an Earth-like planet orbiting the habitable zone of a cool star. The planet which was found using the Kepler Space Telescope has been identified as Kepler-186f and is 1.11 times the radius of the Earth. Their research titled, "An Earth-sized Planet in the Habitable Zone of a Cool Star" will be published in the journal Science today.