Results tagged “sun”

From afar, the Sun appears blank and featureless in visible light. But through a solar telescope in different wavelength, it is revealed to be much, much more.

The Sun Is Spinning Round Again

All was amiss with the Sun! In the early 2000s, a new set of data brought down the chemical abundances at the surface of the Sun, contradicting the values predicted by the standard models used by astrophysicists.

Powerful flares, breathtaking views across the solar poles, and a curious solar 'hedgehog' are amongst the haul of spectacular images, movies and data returned by Solar Orbiter from its first close approach to the Sun.

You Can Help Scientists Study The Sun

If you ever wanted to be an astronomer, now is your chance.

Solar prominences hover above the visible solar disk like giant clouds, held there by a supporting framework of magnetic forces, originating from layers deep within the Sun.

For decades after its discovery, observers could only see the solar chromosphere for a few fleeting moments: during a total solar eclipse, when a bright red glow ringed the Moon's silhouette.

The world's largest solar observatory, the U.S. National Science Foundation's Daniel K. Inouye Solar Telescope, just released its first image of a sunspot.

The Sun is a magnetized star. Its magnetic field is essentially three dimensional and it occupies all layers of the solar atmosphere.

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.

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