The search for life beyond Earth has traditionally focused on exoplanets orbiting Sun-like stars, which is a G-type star. However, low-mass stars, which are designated as K-type and M-type stars, have rapidly become a target for astrobiology, primarily due to their much longer lifetimes. This also means the habitable zone (HZ), which is the distance from a star where liquid water could exist, is much smaller than our solar system’s HZ, and is referred to as the liquid water habitable zone (LW-HZ). In contrast, another type of HZ that involves a star’s ultraviolet (UV) radiation potentially enabling life-harboring conditions is known as UV-HZ.

A first-of-its-kind chemistry test on another planet. ScienceAlert stories are written, fact-checked, and edited by humans, never generated by AI. Don't miss a story, subscribe here.

Thousands of years later.ScienceAlert stories are written, fact-checked, and edited by humans, never generated by AI. Don't miss a story, subscribe here.

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Playing a little extra with your dog improves the emotional bond between owner and dog, according to a new study from Linköping University. However, training did not give the same results. The study is relevant for all dog owners, whether they have young or adult dogs.