News tagged with stars

More to life than the habitable zone

Two separate teams of scientists have identified major challenges for the development of life in what has recently become one of the most famous exoplanet systems, TRAPPIST-1.

dateJul 13, 2017 in Astronomy
shares864 comments 9

Chandra peers into a nurturing cloud

In the context of space, the term 'cloud' can mean something rather different from the fluffy white collections of water in the sky or a way to store data or process information. Giant molecular clouds are vast cosmic objects, ...

dateJul 13, 2017 in Astronomy
shares29 comments 0

Smallest-ever star discovered by astronomers

The smallest star yet measured has been discovered by a team of astronomers led by the University of Cambridge. With a size just a sliver larger than that of Saturn, the gravitational pull at its stellar surface is about ...

dateJul 12, 2017 in Astronomy
shares1971 comments 8

Hidden stars may make planets appear smaller

In the search for planets similar to our own, an important point of comparison is the planet's density. A low density tells scientists a planet is more likely to be gaseous like Jupiter, and a high density is associated with ...

dateJul 11, 2017 in Astronomy
shares171 comments 0

Y-type stars

Brown dwarf stars are failed stars. Their masses are so small, less than about eighty Jupiter-masses, that they lack the ability to heat up their interiors to the roughly ten million kelvin temperatures required for normal ...

dateJul 11, 2017 in Astronomy
shares54 comments 1

Heart of an exploded star observed in 3-D

Supernovas—the violent endings of the brief yet brilliant lives of massive stars—are among the most cataclysmic events in the cosmos. Though supernovas mark the death of stars, they also trigger the birth of new elements ...

dateJul 10, 2017 in Astronomy
shares288 comments 80