astronomy

Neptune, the eighth planet from the sun, was discovered this date in 1846, after mathematical prediction of its location by Urbain le Verrier.  It was the first celestial object located in this fashion.
Among other unique qualities, Neptune has the highest winds in the Solar system.  Take a guess at how high they are, before following [...]

Until now, the accepted view had been that our anomalously large Moon had always been a lone wolf. It is believed to have formed some 4.4 billion years ago in the aftermath of a chance encounter between a Mars-sized planetary embryo and our early Earth.
But the paper’s co-authors, planetary scientists Jack Lissauer, at NASA Ames [...]