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Lunar impacts created seas of molten rock

By Guest PostMarch 25, 2013Scienceanalysis of data, apollo moon rocks, apollo program, brown university, crust, differentiation, differentiation processes, fluid rock, geological sciences, james w head, laser altimeter, liquid rock, lola, luna missions, lunar crust, lunar magma ocean, lunar orbiter, magma ocean paradigm, mantle, maunder crater, melt sea, model, molten rock, moon, NASA, orientale basin, orientale melt, planetary geologist, pristine rocks, remote sensing data, rock forming processes, rock layers, russia, william vaughan

A new analysis of data from NASA’s Lunar Orbiter Laser Altimeter (LOLA) shows that molten rock may have been present on the Moon more recently and for longer periods than previously thought. Differentiation — a settling out of rock layers as liquid rock cools — would require thousands of years and a fluid rock sea at least six miles deep.

PROVIDENCE, R.I. [Brown University] — Early in the Moon’s history an ocean of molten rock covered its entire surface. As that lunar magma ocean cooled over millions of years, it differentiated to form the Moon’s crust and mantle. But according to a new analysis by planetary scientists from Brown University, this wasn’t the last time the Moon’s surface was melted on a massive scale. (more…)

Two Genetic Variations Predict Second Cancers after Radiation Treatment for Children with Hodgkin’s

By Guest PostJuly 28, 2011Health, Scienceandrew skol, apoptosis, cancer types, cells, differentiation, fundamental cellular processes, gene, genetic variations, hodgkins lymphoma, hodgkins survivors, kenan onel, nature medicine, prdm1, prmd1 gene, proliferation, radiation and chemotherapy, radiation induced second cancers, radiation therapy, sarah jackson, single nucleotide polymorphisms, timothy best, treatable cancers

A genome-wide association study published in the August issue of Nature Medicine has found two tiny genetic variations that can predict which patients with Hodgkin’s lymphoma are most likely to develop radiation-induced second cancers years after treatment. Knowing in advance who is at risk could help physicians tailor treatment to reduce the risks for patients who are most susceptible to long-term damage.

Hodgkin’s lymphoma is one of the most treatable cancers, with more than 90 percent of patients surviving after a combination of radiation and chemotherapy. But nearly 20 percent of patients treated as children develop a second cancer within 30 years. The younger the patients are when treated and the higher the radiation dose, the greater the risk. This late side effect of treatment is the second leading cause of death for long-term Hodgkin’s survivors. (more…)

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Lunar impacts created seas of molten rock

Two Genetic Variations Predict Second Cancers after Radiation Treatment for Children with Hodgkin’s