These bright blue stars are not only older than they appear, but instead of running out of fuel, they gain mass at the end of their life , a phenomenon that has puzzled astronomers for decades. Now, Robert Mathieu, from the University of Wisconsin-Madison (USA), believes he has solved the enigma. As indicated in Nature , they steal that mass from other stars they accompany , although they can also form after a stellar collision .
What is a lagging star?
How global warming will affect astronomy
Astronomical observations around the world will worsen in quality as a result of climate change, according to a new study.
New images of Saturn's rings in stunning detail
New images of Saturn's rings in stunning detail
Japanese scientists create a 'washing machine for humans'
Can you imagine taking a relaxing bath in a machine that washes you with bubbles, plays relaxing music or videos?
Insect swarms generate as much electricity as a thunderstorm
Swarms of bees can generate an electrical charge of 1,000 volts per meter, a higher voltage density than thunderclouds and electrified dust storms.
This is what the Earth's magnetic field sounds like
The shield that protects our planet sounds 'pretty scary', according to ESA engineers.