Runaway stars leave infrared waves in space

Astronomers are finding dozens of the fastest stars in our galaxy with the help of images from NASA's Spitzer Space Telescope and Wide-field Infrared Survey Explorer, or WISE.

Rejigging the Cluster quartet

Aiming to study Earth's 'bow shock' in the solar wind, the constellation of Cluster satellites is being rejigged to bring two of the four to within almost touching distance.

NASA's Messenger spots giant space weather effects at Mercury

(Phys.org) —The solar wind of particles streaming off the sun helps drive flows and swirls in space as complicated as any terrestrial weather pattern. Scientists have now spotted at planet Mercury, for the first time, a ...

The bow shock of Kappa Cassiopeiae, a massive, hot supergiant

(Phys.org) —Roguish runaway stars can have a big impact on their surroundings as they plunge through the Milky Way galaxy. Their high-speed encounters shock the galaxy, creating arcs, as seen in this newly released image ...

The Sun's ripple effect

A new study co-authored by Boston University astronomers indicates that a bow shock (a dynamic boundary between the Sun's heliosphere and the interstellar medium) is highly likely. These findings challenge recent predictions ...

What will Voyager 1 discover at the bow of the solar system?

As the Voyager 1 spacecraft approaches the very edges of our solar system, space scientists await to see if it will discover the solar system's 'bow shock'; a theorized pile up of gas, dust, and cosmic rays, which accumulate ...

Wind mission encounters 'SLAMS' waves

(Phys.org) —As Earth moves around the sun, it travels surrounded by a giant bubble created by its own magnetic fields, called the magnetosphere. As the magnetosphere plows through space, it sets up a standing bow wave or ...

Cassini sheds light on cosmic particle accelerators

(Phys.org)—During a chance encounter with what appears to be an unusually strong blast of solar wind at Saturn, NASA's Cassini spacecraft detected particles being accelerated to ultra-high energies. This is similar to the ...

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