Two black holes entwined in a gravitational tango in an earlier artist’s conception of black holes. Credit: NASA As two galaxies enter the final stages of merging, scientists have theorized that the galaxies’ supermassive black holes will form a “binary,” or two black holes in such close orbit they are gravitationally bound to one another.

This is an illustration of LISA Pathfinder on its way to Earth-sun L1. Credit: ESA/C. Carreau LISA Pathfinder, a mission led by ESA (the European Space Agency) with contributions from NASA, has successfully demonstrated critical technologies needed to build a space-based observatory for detecting ripples in space-time called gravitational waves. Now a team of NASA

Artist concept of the planetary body 2014 UZ224, more informally known as DeeDee. ALMA was able to observe the faint millimeter-wavelength “glow” emitted by the object, confirming it is roughly 635 kilometers across. At this size, DeeDee should have enough mass to be spherical, the criteria necessary for astronomers to consider it a dwarf planet,

Aircraft-induced hole observed at the West Antarctic Ice Sheet Divide Camp, Antarctica (79 28.058 °S 112 05.189 °W, 1806 m elevation) on Dec. 12, 2009, 1400 New Zealand Time. The cloud’s bright cumuliform structure with gray fallstreaks below are visible. The hole first appeared on the horizon and then moved toward the camera. It is

CLOUD chamber. Credit: CERN In a study led by the University of Leeds, scientists have solved one of the most challenging and long-standing problems in atmospheric science: to understand how particles are formed in the atmosphere. The research paper, published online today in the journal Science, details the first computer simulation of atmospheric particle formation

Graphic illustrating CERN’s CLOUD experiment. Credit: Fabienne Marcastel / © 2011 CERN In a paper published in the journal Nature, the CLOUD experiment at CERN has reported its first results. The CLOUD experiment has been designed to study the effect of cosmic rays on the formation of atmospheric aerosols — tiny liquid or solid particles

What our Milky Way might look like to alien astronomers: This image of NGC 2683, a spiral galaxy also known as the “UFO Galaxy” due to its shape, was taken by the Hubble Space Telescope. Since trying to find out what the Milky Way looks like is a bit like trying to picture an unfamiliar

U astronomers and colleagues have found two ultra-compact dwarf galaxies, VUCD3 and M59cO, with supermassive black holes. The findings suggest that the dwarfs are likely tiny leftovers of larger galaxies that were stripped of their outer layers after colliding into other, larger galaxies M87 and M59, respectively. Credit: NASA/Space Telescope Science Institute Three years ago,

Artist’s impression of super-Earth planet GJ 1132b. Credit: MPIA Astronomers have detected an atmosphere around the super-Earth planet GJ 1132b. This marks the first detection of an atmosphere around an Earth-like planet other than Earth itself, and thus is a significant step on the path towards the detection of life outside our Solar System. The

This graphic illustrates how Cassini scientists think water interacts with rock at the bottom of the ocean of Saturn’s icy moon Enceladus, producing hydrogen gas. Credit: NASA/JPL-Caltech/Southwest Research Institute Two veteran NASA missions are providing new details about icy, ocean-bearing moons of Jupiter and Saturn, further heightening the scientific interest of these and other “ocean

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