Blog Archives

Lunar samples record impact 4.2 billion years ago

An international team of researchers led by The Open University (OU) has provided the first sample-based evidence, which they argue reflects the age of the Serenitatis Basin – one of the oldest craters on the Moon.

The formation and ages of the lunar basins and craters, created during large collisional impact events during the first ~500 million years of the Solar System history,

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Asteroid 16 Psyche might not be what scientists expected

The widely studied metallic asteroid known as 16 Psyche was long thought to be the exposed iron core of a small planet that failed to form during the earliest days of the solar system. But new University of Arizona-led research suggests that the asteroid might not be as metallic or dense as once thought,

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Earth’s meteorite impacts over past 500 million years tracked

For the first time, a unique study conducted at Lund University in Sweden has tracked the meteorite flux to Earth over the past 500 million years. Contrary to current theories, researchers have determined that major collisions in the asteroid belt have not generally affected the number of impacts with Earth to any great extent.

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Did heat from impacts on asteroids provide the ingredients for life on Earth?

A research group from Kobe University has demonstrated that the heat generated by the impact of a small astronomical body could enable aqueous alteration and organic solid formation to occur on the surface of an asteroid. They achieved this by first conducting high-velocity impact cratering experiments using an asteroid-like target material and measuring the post-impact heat distribution around the resulting crater.

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Research sheds light on origins, age of massive impact crater

Hidden beneath a kilometre of ice in northwestern Greenland, an impact crater that could swallow a city the size of London, Ont. is the subject of much debate about its origins and age.

Now, Western planetary scientist Elizabeth Silber has published new research suggesting the crater could be young –

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Dark matter’s shadowy effect on Earth

Earth’s periodic passage through the galaxy’s disk could initiate a series of events that ultimately lead to geological cataclysms and mass extinctions.

By Michael R. Rampino 

Do geologists dream of a final theory? Most people would say that plate tectonics already serves as geology’s overarching idea.

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Lessons learnt from simulated strike

In an alternate reality playing out at this year’s international Planetary Defense Conference, a fictional asteroid crashes over Europe, ‘destroying’ a region about 100 km wide near the Czech Republic and German border. The scenario was imagined, but the people who took part are very real, and the lessons learnt will shape our ability to respond to dangerous asteroids for years to come.

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New telescope at ESO’s La Silla joins effort to protect Earth from risky asteroids

Part of the world-wide effort to scan and identify near-Earth objects, the European Space Agency’s Test-Bed Telescope 2 (TBT2), a technology demonstrator hosted at ESO’s La Silla Observatory in Chile, has now started operating. Working alongside its northern-hemisphere partner telescope, TBT2 will keep a close eye on the sky for asteroids that could pose a risk to Earth,

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NASA to participate in tabletop exercise simulating asteroid impact

JPL’s Center for Near Earth Object Studies will lead the hypothetical impact scenario to see how international agencies respond to an actual impact prediction. During the week of April 26, members of NASA’s Planetary Defense Coordination Office (PDCO) will participate in a “tabletop exercise” to simulate an asteroid impact scenario.

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Primordial Asteroids That Never Suffered Massive Collisions all Seem to be Larger Than 100 km. Why?

Planetary systems form out of the remnant gas and dust of a primordial star. The material collapses into a protoplanetary disk around the young star, and the clumps that form within the disk eventually become planets, asteroids, or other bodies. Although we understand the big picture of planetary formation,

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about near Earth objects in the UK.

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