Flying high

Flying high

On Sept. 19, Washington University scientist Henric Krawczynski, announced that the X-Calibur X-ray telescope had landed safely near the border between Arizona and New Mexico, completing a long stratospheric balloon flight with disks full of data about neutron stars and black holes.
The realms of Mordor

The realms of Mordor

What gives Mordor Macula, the red dusted polar region of Pluto’s moon Charon, its color? New Horizons scientists, including Washington University’s Bill McKinnon, answer the question in the current issue of Nature.
Planetary smackdown

Planetary smackdown

The leading theory for the moon’s formation got in trouble recently when it was revealed that the moon and Earth are isotopic twins. Now highly precise measurements of the isotopes of an element that was still condensed at the “cut off” temperature when material started to fall back to Earth suggest a dramatic solution to the problem.
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