Results tagged “sun”

An international team of scientists led by the University of Sheffield have discovered previously undetected observational evidence of frequent energetic wave pulses the size of the UK, transporting energy from the solar surface to the higher solar atmosphere.

The Sun is why we're here. It's also why Martians or Venusians are not.

About 99 percent of the Sun's energy emitted as neutrinos is produced through nuclear reaction sequences initiated by proton-proton (pp) fusion in which hydrogen is converted into helium, say scientists including physicist Andrea Pocar at the University of Massachusetts Amherst.

The Sun's corona, invisible to the human eye except when it appears briefly as a fiery halo of plasma during a solar eclipse, remains a puzzle even to scientists who study it closely.

Magnetism plays a critical role in various solar phenomena such as flares, mass ejections, flux ropes, and coronal heating.

On Sept. 30, 2014, multiple NASA observatories watched what appeared to be the beginnings of a solar eruption.

The elemental composition of the Sun's hot atmosphere known as the 'corona' is strongly linked to the 11-year solar magnetic activity cycle, a team of scientists from UCL, George Mason University and Naval Research Laboratory has revealed for the first time.

For the first time in the world, scientists have explored the magnetic field in the upper solar atmosphere by observing the polarization of ultraviolet light from the Sun.

First Solar Images From GOES-16

The first images from the Solar Ultraviolet Imager or SUVI instrument aboard NOAA's GOES-16 satellite have been successful, capturing a large coronal hole on Jan. 29, 2017.

The sun emitted three mid-level solar flares on July 22-23, 2016, the strongest peaking at 1:16 am EDT on July 23.

Towering Magnetic Arches On The Sun

Arches of magnetic field lines towered over the sun's edge as a pair of active regions began to rotate into view in this video captured by NASA's Solar Dynamics Observatory on April 5-6, 2016.

Coronal Hole Observed On The Sun

A long coronal hole can be seen right down the middle of the sun in this video captured by NASA's Solar Dynamics Observatory on March 23-25, 2016.

Cascading Magnetic Arches on The Sun

A dark solar filament above the sun's surface became unstable and erupted on Dec. 16-17, 2015, generating a cascade of magnetic arches.

SDO Sees a Dark Filament Circle On The Sun

A dark, almost circular filament broke away from the sun in a gauzy, feathery swirl, on Nov. 15, 2015, in this video from NASA's Solar Dynamics Observatory.

SDO Sees The Sun Emit a Mid-level Flare

The sun emitted a mid-level solar flare, peaking at 8:13 p.m. EDT on Oct. 1, 2015.

Sun Emits M7.9-Class Solar Flare

The sun emitted a mid-level solar flare, peaking at 4:16 a.m. EDT on June 25, 2015.

Giant Filaments on the Sun

A pair of giant filaments on the face of the sun have formed what appears to be an enormous arrow. If straightened out, each filament would be about as long as the sun's diameter, 1 million miles long.

The sun's surface is blisteringly hot at 10,340 degrees Fahrenheit -- but its atmosphere is another 300 times hotter.

Groundbreaking images of the Sun captured by scientists at NJIT's Big Bear Solar Observatory (BBSO) give a first-ever detailed view of the interior structure of umbrae -- the dark patches in the center of sunspots -- revealing dynamic magnetic fields responsible for the plumes of plasma that emerge as bright dots interrupting their darkness.

Our Sun Experiences Seasonal Changes

The Sun undergoes a type of seasonal variability with its activity waxing and waning over the course of nearly two years, according to a new study by a team of researchers led by the National Center for Atmospheric Research.

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