Rosetta's 'rubber duck' comet was once two objects

Two comets crashed long ago to create the dumbbell-shaped Comet 67P/Churyumov-Gerasimenko, say scientists with a European Space Agency mission studying the comet. The reason for the odd form has been a mystery since the agency's spacecraft Rosetta, visiting the comet, revealed the shape in July 2014. Researchers attributed the shape either to ...

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Scientists are planing for mission to push asteroid off-course

Scientists are planning a project to test the waters for what might someday be a mission needed to save the Earth-by pushing an asteroid off-course. The current mission just involves diverting a mini-asteroid-or more precisely, the moon of an asteroid, which is also an asteroid, just smaller. The idea is to shift ...

  • 1 Years ago
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Findings almost confirms that liquid water flows on Mars

New findings from NASA's Mars Reconnaissance Orbiter satellite provide the strongest evidence yet that liquid water flows part of the time on Mars, scientists with the mission said. Using an instrument on the satellite called an imaging spectrometer, researchers detected signatures of minerals associated with water on slopes where mysterious streaks ...

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Finally Rosetta satellite reveals commet's water-ice cycle

A daily cycle in which water ice turns to gas feeds the "tails" and fuzzy halos of comets like the one under scrutiny by the European Space Agency's Rosetta spacecraft, mission scientists say. Comets are mixtures of dust and ices, which they periodically shed as they swing towards their closest point ...

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Colliding stars explain enigmatic 17th century explosion

A "star" that European astronomers saw appear out of the blue in 1670 was actually a rare, violent breed of stellar collision, a new study proposes. The burst was spectacular enough to be easily seen with the naked eye initially, but the traces it left were so faint that it took ...

  • 2 Years ago
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Study finds first stars were born "late"

New maps from the European Space Agency's Planck satellite show the first stars formed much later than previously thought, scientists say. The satellite maps so-called polarized light across the sky-light believed to have been traveling toward us since the almost dawn of time, and providing a certain view of the early ...

  • 2 Years ago
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Star found to have little planets over twice as old as our own

Astronomers say they have found at least five smaller-than-Earth planets orbiting a star in a solar system over twice as old as our solar system. Although the planets are uninhabitable due to heat, the find suggests life could have formed long before our Earth formed, they add. The study shows that ...

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NASA spacecraft, New Horizon is getting close to dwarf planets

NASA's Dawn spacecraft is closing in on the dwarf planet Ceres, agency scientists say-the first time a spacecraft is expected to visit a dwarf planet. A second such event is planned in July when another NASA craft, New Horizons, reaches Pluto, which was reclassified from planet to dwarf planet in 2006. Ceres, ...

  • 2 Years ago
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Possible existence of wormhole in our galaxy

Our galaxy could conceivably be a huge wormhole - or shortcut through space and time - a study concludes, though this path may or may not be navigable. The study, published in the journal Annals of Physics, looks at a possibility that physicists had been toying with for some time and ...

  • 2 Years ago
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Mars rock shows traces of biological activity

Did Mars ever have life? Might it still? A meteorite identified as coming from Mars has reignited the old debate. A study published this month argues that the rock contains traces of carbon with a likely biological origin, like coal, which comes from remains of long-ago plants. "So far, there is ...

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