Tagged: stars

New look at a bright stellar nursery

This overlay shows radio (orange) and infrared images of a giant molecular cloud called W49A, where new stars are being formed. A team of astronomers led by Chris DePree of Agnes Scott College used the National Science Foundation’s Karl G. Jansky Very Large Array (VLA)...

One of Earth’s nearest stars may be a dark matter factory

A hunt for hypothetical axions streaming from Betelgeuse turns up empty but helps physicists set constraints on their properties. Deep in its searing hot belly, the giant red star Betelgeuse could be producing tons of hypothetical dark matter particles called axions that, if they exist,...

Small stars host droves of life-friendly worlds

The Galaxy’s most common type of star could host habitable Earth-sized planets. Some of the stars nearest to the Solar System are likely to host planets just like home — roughly the size of Earth and capable of bearing liquid water — according to a...

Beyond the stars

Sitting for an interview in his office at the Harvard-Smithsonian Center for Astrophysics (CFA) in Cambridge, Massachusetts, the normally voluble astronomer Dimitar Sasselov looks nervous. Asked for his favourite among the many potential planets discovered by NASA’s Kepler planet-finding mission, for which he is a...

Kepler’s surprise: The sounds of the stars

Data from NASA’s Kepler space telescope have revolutionized the search for planets outside the Solar System — and are now doing the same for asteroseismology. Most astronomers gaze at the heavens and see stars. William Chaplin hears an orchestra — a celestial symphony in which...

Astronomers revisit dwarf stars’ promise

Kepler data spur searches for habitable planets around small, low-temperature stars. The eight 40-centimetre telescopes of MEarth are hunting for Earth analogues around M-dwarf stars. An Earth-like planet — and with it, perhaps life — does not have to orbit a Sun-like star. That idea...