About 548 results
Open links in new tab
  1. SpaceWeather.com -- News and information about meteor …

    Realtime Space Weather Photo Gallery Free: Spaceweather.com Newsletter. OVAL SUN HALO: 99 out of 100 sun halos are perfectly circular. On May 7th, John Dartnell looked into the blue sky over North Wiltshire, UK, and saw the 100th. "This display was oval in shape," he says.

  2. The Interplanetary Magnetic Field - Space weather

    The Sun's magnetic field isn't confined to the immediate vicinity of our star. The solar wind carries it throughout the solar system. Out among the planets we call the Sun's magnetic field the "Interplanetary Magnetic Field" or "IMF."

  3. Spaceweather.com Time Machine

    Mar 14, 2025 · Now, the sun's northern hemisphere is waking up. Two-thirds of today's sunspot groups are north of the sun's equator, and the sunspot number is climbing again. Could this herald a second peak for Solar Max?

  4. The Classification of X-ray Solar Flares - Space weather

    A solar flare is an explosion on the Sun that happens when energy stored in twisted magnetic fields (usually above sunspots) is suddenly released. Flares produce a burst of radiation across the electromagnetic spectrum, from radio waves to x-rays and gamma-rays.

  5. Spaceweather.com Time Machine

    Feb 4, 2025 · A mixture of sun-warmed water and cold winter air sets the stage for strong mock mirages. if you see one, submit your photos here. Realtime Space Weather Photo Gallery Free: Spaceweather.com Newsletter

  6. Spaceweather.com Time Machine

    Oct 7, 2024 · A date of particular interest is Oct. 9th when the comet will be only 4 degrees from the sun. At that time, comet dust could forward scatter sunlight toward Earth, significantly amplifying the comet's brightness.

  7. Spaceweather.com Time Machine

    If current trends hold, its magnitude should increase to -5 (twice as bright as Venus) on Jan. 13th, when the comet swoops only 0.09 AU from the sun. "It might even be visible in the daytime sky," says Nick James of the British Astronomical Association. "However, the …

  8. What is B sub Z? - Space weather

    The sun is a big magnet. Our star has an internal dynamo that generates a strong magnetic field. The solar wind carries this magnetic field throughout the solar system. Earth has a magnetic field, too. It forms a bubble around our planet called the …

  9. SpaceWeather.com -- News and information about meteor …

    Daily monitoring of solar flares, geomagnetic storms, Earth's aurora, and all forms of space weather.

  10. Spaceweather.com Time Machine

    Daily monitoring of solar flares, geomagnetic storms, Earth's aurora, and all forms of space weather.

Refresh