Space weather: Your 5 questions answered

NASA answers 5 questions about space weather, from what does it do to Earth and how is it monitored to how can we prepare.

Aurora alert for December 23, after M-class flares

A solar storm has caused a stream of charged particles to be headed toward Earth. Aurora alert! Possible northern and southern lights December 23, 2021.

Parker Solar Probe: 1st spacecraft to touch sun

The Parker Solar Probe is the 1st spacecraft to touch the sun. It did so in April of 2021 when it entered the sun's corona and sampled the atmosphere there.

Total solar eclipse of December 4, 2021

A total solar eclipse occurs December 4, 2021. The total phase sweeps over Antarctica, while the partial phase reaches southernmost points of three continents.

A storm on the sun, and a great week for auroras

Aurora alert in effect for the next few days: the sun sent out a halo coronal mass ejection on November 2, 2021, due to arrive at Earth on November 4.

Solar storm and aurora starting October 30

A solar storm after an eruption on the sun is carrying plasma toward Earth, which should produce northern and southern lights this weekend.

X-flare yesterday, aurora alert this weekend

The biggest solar flares are known as X-flares. Check out this image of an X-flare on the sun on October 28, 2021. It prompted an aurora alert.

Solar superflares hit Earth multiple times

Scientists found evidence for solar superflares thousands of years ago from evidence in tree rings. Could a solar superflare happen again in the future?

Aurora alert! Pair of CMEs to jolt Earth’s magnetic field

Aurora alert! A pair of coronal mass ejections will reach Earth September 1-2, 2021. Though not dangerous to satellites or the grid, they might cause auroras.

A 1967 solar storm nearly caused a nuclear war

The U.S. Air Force began preparing for war on May 23, 1967, thinking that the Soviet Union had jammed a set of American surveillance radars. But instead the powerful 1967 solar storm was to blame.