What would happen to Earth if the sun suddenly vanished? - Live Science

Astronomers analyzing white dwarf stars have for the first time found a star that would appear green to human eyes, according to a new study. While for most stars, color is temperature-dependent and limited to a few hues, white dwarfs, which are the dense remnants of sun-like stars that have died, can glow in an incredible range of colors, said lead study author Mark Hollands, an astrophysicist at the University of Warwick, England, on Thursday. “The colors that normal stars can have are pretty much only orange, white or blue,” Hollands told CNN. “What we found is, for most white dwarfs, that’s the same as well. But there are some special cases where the physics in the outer layers of these stars are sufficiently strange that it causes actually quite big deviations in terms of their spectrum,” he said. These deviations are due to the interaction between the helium in their atmosphere and traces of other elements, which vary between white dwarfs, depending on what material has interacted with the star over the course of its lifetime.

A new genetic testing approach for sick children with immune conditions could slash diagnosis waiting times from 12 months to as little as two weeks, University of Queensland research has found. A study with Children's Health Queensland has shown a new genetic testing process for children with immune conditions could speed up diagnoses, fast-track treatments and save lives.