Galaxies

Gravitational lensing shows that two galaxy clusters are connected by a filament of dark matter. John Matson reports

Astronomers observed light warped by the lensing effect of a massive galaxy cluster more than 10 billion light-years away, the most distant cluster ever responsible for perceived lensing. Evelyn Lamb reports

Meet Minnie Mao, 26, one of the up-and-coming physicists attending this year's Lindau Nobel Laureate Meeting

Meet Jacinta Delhaize, 25, one of the up-and-coming physicists attending this year's Lindau Nobel Laureate Meeting

Meet Eduard Rusu, 27, one of the up-and-coming physicists attending this year's Lindau Nobel Laureate Meeting

Meet Laurence Perreault Levasseur, 24, one of the up-and-coming physicists attending this year's Lindau Nobel Laureate Meeting

Exploding white dwarf stars and an unexpected abundance of iron explain the chemistry of a unique star cluster

Amateur astronomer Jeremiah Horrox was the only person in England, and possibly the entire world, convinced that a Venus solar transit would occur in 1639, an event that Johannes Kepler himself had failed to predict

Black hole jets had previously been detected in other galaxies, but not in ours

The split will eventually see South Africa receiving the majority of the project's 3,000 dishes, and Australia will host the low-frequency radio antennas

A close look at a distant cataclysm indicates that the black hole's victim was a red giant star

Washington, D.C. and New York City greet the retiring shuttles