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astrophysics, cosmology, the universe...

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Jupiter twin discovered around solar twin

A research team has been targeting Sun-like stars in a bid to find planetary systems similar to our Solar System. The team has now uncovered a planet with a very similar mass to Jupiter, orbiting a Sun-like star, HIP 11915, at almost exactly the same distance as Jupiter.

Posted: Jul 15th, 2015

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Scientists study atmosphere of Venus through transit images

Two of NASA's heliophysics missions can now claim planetary science on their list of scientific findings. A group of scientists used the Venus transit - a very rare event where a planet passes between Earth and the sun, appearing to us as a dark dot steadily making its way across the sun's bright face - to make measurements of how the Venusian atmosphere absorbs different kinds of light.

Posted: Jul 9th, 2015

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NASA's Swift reveals a black hole bull's-eye

What looks like a shooting target is actually an image of nested rings of X-ray light centered on an erupting black hole. On June 15, NASA's Swift satellite detected the start of a new outburst from V404 Cygni, where a black hole and a sun-like star orbit each other.

Posted: Jul 9th, 2015

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Astronomers find a massive black hole that outgrew its galaxy

Astronomers have spotted a super-sized black hole in the early universe that grew much faster than its host galaxy. The discovery runs counter to most observations about black holes In most cases, black holes and their host galaxies expand at the same rate.

Posted: Jul 9th, 2015

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Data shows surfer-shaped waves in near-Earth space

Named Kelvin-Helmholtz waves in the late 1800s after their discoverers, these waves have since been discovered all over the universe: in clouds, in the atmospheres of other planets, and on the sun. Now two recently published papers highlight these shapely waves at the boundaries of near-Earth space.

Posted: Jul 9th, 2015

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Bricks to build an Earth found in every planetary system

Earth-like planets orbiting other stars in the Milky Way are three times more likely to have the same type of minerals as Earth than astronomers had previously thought. In fact, conditions for making the building blocks of Earth-like rocks are ubiquitous throughout the Milky Way.

Posted: Jul 8th, 2015

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Discovering a new stage in the galactic lifecycle

Astronomers have been able to observe the dust contents of galaxies as seen just 1 billion years after the Big Bang - a time period known as redshift 5-6. These are the earliest average-sized galaxies to ever be directly observed and characterized in this way.

Posted: Jul 1st, 2015

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NASA missions monitor a waking black hole

NASA's Swift satellite detected a rising tide of high-energy X-rays from the constellation Cygnus on June 15, just before 2:32 p.m. EDT. About 10 minutes later, the Japanese experiment on the International Space Station called the Monitor of All-sky X-ray Image (MAXI) also picked up the flare.

Posted: Jul 1st, 2015

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New model of cosmic stickiness favors 'Big Rip' demise of universe

The universe can be a very sticky place, but just how sticky is a matter of debate. That is because for decades cosmologists have had trouble reconciling the classic notion of viscosity based on the laws of thermodynamics with Einstein's general theory of relativity. However, a team has come up with a fundamentally new mathematical formulation of the problem that appears to bridge this long-standing gap.

Posted: Jun 30th, 2015

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Seeing a supernova in a new light

Type Ia supernovae are the 'standard candles' astrophysicists use to chart distance in the Universe. But are these dazzling exploding stars truly all the same? To answer this, scientists must first understand what causes stars to explode and become supernovae. Recently, a unique collaborative project provided a rare glimpse of the process.

Posted: Jun 30th, 2015

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