Posts Tagged 'astronomy'

Nearby Star is At Least 13.2 Billion Years Old

HD-140283

Astronomers have discovered one of the oldest stars in the known universe. They believe it is at least 13.2 billion years old and formed shortly after the Big Bang.

Read more @ SciTechDaily

Sutter’s Mill Meteorite is Fastest on Record

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The Sutter’s Mill meteorite was seen by many eyewitnesses over the foothills of the Sierra Nevada range in California. A new, detailed study has traced the origins of this rock with unusual precision, and it has been revealed that it came down at record-breaking speed.

Read more @ SciTechDaily

Eta Carina Nebula Imaged with 268-Megapixel Camera

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Eta Carina Nebula. Credit: ESO

The Eta Carina Nebula (NGC 3372) surrounds several open clusters of stars, including Eta Carinae and HD 93129A, two of the most massive and luminous stars in the Milky Way. The Eta Carina Nebula lies between 6,500 and 10,000 light-years from Earth and appears in the constellation of Carina, in the Carina-Sagittarius Arm of the Milky Way.

Continue reading ‘Eta Carina Nebula Imaged with 268-Megapixel Camera’

Saturn-Like Rings May Have Formed Solar System’s Moons

Moons of Solar System Might Have Been Formed From Saturn-Like Rings

Earth’s moon might have emerged from a long-vanished ring system, akin to the rings still encircling Saturn, and this could apply to many of the satellites orbiting other planets. The bulk of the regular satellites in the Solar System might have formed this way, instead of taking shape simultaneously with the planet as a direct result of planet formation.

Read more @ SciTechDaily

Impact May Have Deformed Saturn’s Moon Iapetus

One of the strangest moons in the Solar System is Saturn’s Iapetus, which features an enormous equatorial mountain ridge and spiky belt that rises 12 miles above the moon’s surface may have all been the result of a single impact.

Read more @ SciTechDaily

Presence of Ice on Mercury Confirmed by MESSENGER Probe

polar-craters-mercury

While the surface of Mercury is hot enough in some places to melt lead, the MESSENGER probe confirmed that there are about a trillion tonnes of water ice trapped inside craters.

Read more @ SciTechDaily

Laboratory-Based Astrophysics Leads to Dedicated Discipline

tokamak-generates-solar-wind

The gigantic orange magnets at MIT were originally built decades ago to confine hydrogen nuclei in the search for nuclear fusion. However, since 1998 plasma physicist Jan Egedal has been using them to simulate magnetic fields in the thin wind of charged particles emanating from Sol. Egedal hopes to figure out how the solar wind can transfer energy.

Read more @ SciTechDaily


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