The Sky Tonight

August 02, 2014

New NASA Research Shows Giant Asteroids Battered Early Earth
Moffet Field CA (NASA) Aug 01, 2014
New research shows that more than four billion years ago the surface of Earth was heavily reprocessed - or melted, mixed, and buried - as a result of giant asteroid impacts. A new terrestrial bombardment model, calibrated using existing lunar and terrestrial data, sheds light on the role asteroid collisions played in the evolution of the uppermost layers of the early Earth during the geologic eon called the "Hadean" (approximately 4 to 4.5 billion years ago). An international team of researchers f ... read more

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ALMA Finds Double Star with Weird and Wild Planet-forming Discs Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found wildly misaligned planet-forming gas discs around the two young stars in the binary system HK Tauri. These new AL ... more		Mapping the optimal route between 2 quantum states As a quantum state collapses from a quantum superposition to a classical state or a different superposition, it will follow a path known as a quantum trajectory. For each start and end state t ... more		Scientists separate a particle from its properties Researchers from the Vienna University of Technology have performed the first separation of a particle from one of its properties. The study, carried out at the Institute Laue-Langevin (ILL) and pub ... more
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Tidal forces gave moon its shape The shape of the moon deviates from a simple sphere in ways that scientists have struggled to explain. A new study by researchers at UC Santa Cruz shows that most of the moon's overall shape can be ... more		Mercury's magnetic field tells scientists how its interior is different from Earth's Earth and Mercury are both rocky planets with iron cores, but Mercury's interior differs from Earth's in a way that explains why the planet has such a bizarre magnetic field, UCLA planetary physicis ... more		Sierra Space clears design milestone for missile tracking satellites in SDA Tranche 2 Top diplomats of North Korea, China agree to oppose 'hegemonism' The Surprising Overlap In Skills Required To Fly An Aircraft And To Excel At iGaming		MESSENGER Gets Closer to Mercury than Ever Before On July 25, MESSENGER moved closer to Mercury than any spacecraft has before, dropping to an altitude at closest approach of only 100 kilometers (62 miles) above the planet's surface. "The sci ... more
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Astronomers measure weight of galaxies, expansion of universe Astronomers at the University of British Columbia have collaborated with international researchers to calculate the precise mass of the Milky Way and Andromeda galaxies, dispelling the notion that t ... more		Riddle of bulging Moon solved at last Far from being perfectly round, the Moon has a weird shape, with a highland bulge on the side facing the Earth and another bulge on its far side - a riddle that has fascinated scientists for decades. ... more		The first animals on Earth may have been sea sponges, study suggests Small Satellite Contracted to Probe Climate Effects of Space Radiation Fengyun satellite strengthens China global weather forecasting capacity		Mysterious molecules in space Over the vast, empty reaches of interstellar space, countless small molecules tumble quietly though the cold vacuum. Forged in the fusion furnaces of ancient stars and ejected into space when those ... more
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