Innovative Japanese telescope spots red dwarf superflare in Leo
Jupiter-size star generates titanic white-light ‘superflare’
Red dwarf superflares pose threats to exoplanet atmospheres
Sun’s adolescent storms may have been key to life on Earth
Some 4 billion years ago, the Sun shone with only about three-quarters the brightness we see today, but its surface roiled with giant eruptions spewing enormous amounts of radiation into space. These powerful solar explosions may have provided the crucial energy needed to create greenhouse gas in Earth’s atmosphere, warming the planet and incubating life.
Sun-like star shows magnetic field was critical for life on early Earth
Nearly four billion years ago, life arose on Earth. Life appeared because our planet had a rocky surface, liquid water, a blanketing atmosphere and a protective magnetic field. A new study of the young, Sun-like star Kappa Ceti shows that a magnetic field plays a key role in making a planet conducive to life.