Solar activity is still increasing in a sunspot cycle that is proving way more intense than scientists predicted. Just how much stronger is it going to get?

We've already learned a lot about the solar system, but sometimes the most fascinating things are what we DON'T know.

Experts warn that the sun's next "solar maximum" could be more powerful and arrive sooner than expected.

Space weather can have a major effect on the technology we rely on. And a large solar flare could cause the most significant weather threat because so much of essential services are powered by a functioning electrical grid and a...

As Earth makes its annual trip around the Sun, we feel the impacts of its journey in the form of seasons. Our planet’s tilt in relation to the Sun determines what season we experience here on Earth. But, did you know that the Sun goes...

Dr. Steve Johnson, Senior Scientist of the Space Radiation Analysis Group, discusses what's being done right now to document radiation exposure, not only to ensure our astronauts stay healthy, but to understand weather in space. HWHAP...

A massive storm over the Sun discharged the largest solar flare in three years on Sunday, No. 29. <br/>

Flares happen when the powerful magnetic fields in and around the sun reconnect. They're usually associated with active regions, often seen as sun spots, where the magnetic fields are strongest. Flares are classified according to...

Dr. Joe Gurman of NASA's Goddard Space Flight Center provides commentary on selected shots from SOHO's 20 years in...

NASA scientists answer some common questions about the sun, space weather, and how they affect the Earth. This is a two-part series.



Part Two

addresses:

1. Do all flares and CM

Es affect the...

The Sun is stirring from its latest slumber. As sunspots and flares, signs of a new solar cycle, bubble from the Sun’s surface, scientists are anticipating a flurry of solar activity over the next few years. Roughly...

The number of sunspots increases and decreases over time in a regular, approximately 11-year cycle, called the sunspot cycle. The exact length of the cycle can vary. It has been as short as eight years and as long as fourteen, but the...