Does a black hole fire up cold heart of the Phoenix?

Radio astronomers have detected jets of hot gas blasted out by a black hole in the galaxy at the heart of the Phoenix Galaxy Cluster, located 5.9 billion light-years away in the constellation Phoenix. This is an important ...

Cheaters don't always win: Species that work together do better

The sign of a healthy personal relationship is one that is equally mutual—where you get out just as much as you put in. Nature has its own version of a healthy relationship. Known as mutualisms, they are interactions between ...

Probing Question: What predicts a happy marriage?

You’ve planned the perfect Valentine’s Day, booked the candlelit restaurant, bought chocolate and flowers. (Or, depending on your darling's taste, bought tickets to a monster truck rally.) The night couldn’t have gone ...

Facebook, Cornell researchers analyze romantic ties

Facebook's Eric Backstrom, senior engineer, together with Jon Kleinberg, a computer scientist at Cornell University, have sparked interest with the online publication over the weekend of their paper, "Romantic Partnerships ...

An equation for friendship

If only they had been there in 1939: Plugging in numbers representing the friendliness between pairs of nations at the outset of World War II, researchers at Cornell University used a computer program to successfully predict ...

Plants mimic scent of pollinating beetles

The color and scent of flowers and their perception by pollinator insects are believed to have evolved in the course of mutual adaptation. However, an evolutionary biologist from the University of Zurich has now proved that ...

Image: Hubble checks out a home for old stars

This image, taken with the Wide Field Planetary Camera 2 on board the NASA/ESA Hubble Space Telescope, shows the globular cluster Terzan 1. Lying around 20,000 light-years from us in the constellation of Scorpius (The Scorpion), ...

First planets found around sun-like stars in a cluster

(Phys.org)—NASA-funded astronomers have, for the first time, spotted planets orbiting sun-like stars in a crowded cluster of stars. The findings offer the best evidence yet planets can sprout up in dense stellar environments. ...

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