What is a Coronal Hole? NASA has discovered a massive butterfly-shaped coronal hole on the Sun. Learn about these coronal ...

A coronal hole more than 35 times wider than the Earth has appeared on the surface of the sun, and it could spark aurora in Alaska, parts of Canada and perhaps even the far northern United States.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Intense auroras are expected across northern North America, and may be visible in about 15 U.S.

First NASA figured out how to fit a square peg in a round hole (it happened in Apollo 13 and it’s totally worth googling to see how they did it, but Hair Balls digresses); now they’ve spotted a square ...

Astronomers’ hearts were a-flutter this week when a butterfly-shaped hole appeared in the Sun. The giant coronal hole was spotted facing Earth, likely firing solar winds at our planet that could lead ...

Ryan French receives funding from NASA. On Sept. 24, 2025, NASA launched two new missions to study the influence of the Sun on the solar system, with further missions scheduled for 2026 and beyond.

Astronomers' hearts were a-flutter this week when a butterfly-shaped hole appeared in the Sun. The giant coronal hole was spotted facing Earth, likely firing solar winds at our planet that could lead ...

A "hole" in the sun is sending a high-speed stream of charged particles toward our planet, which could make dancing auroras visible from about 15 U.S. states tonight (June 25). The auroras are ...