Astronomers Locate Source of Hazardous High-Energy Particles in the Sun

The source of potentially hazardous solar particles, released from the Sun at high speed during storms in its outer atmosphere, has been located for the first time by researchers at UCL and George Mason University, Virginia, USA. These particles are highly charged and, if they reach Earth’s atmosphere, can potentially disrupt satellites and electronic infrastructure,… Read More Astronomers Locate Source of Hazardous High-Energy Particles in the Sun

Extended dark matter halo found circling ancient dwarf galaxy

Astronomers have discovered an extended dark matter halo encircling Tucana II, an ultra faint, ancient dwarf galaxy located 163,000 light years from Earth. The discovery, described Monday in the journal Nature Astronomy, suggests the cosmos’ first galaxies were more massive than scientists thought. Tucana II is one of dozens of tiny galaxies caught in the orbit… Read More Extended dark matter halo found circling ancient dwarf galaxy