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Solar System

New Forecast Resets Solar Cycle Expectations

A new forecast suggests that sunspot numbers, aurorae, and other solar activity will peak sooner and at a higher level than expected.

Magnetic field lines on the Sun

Solar System

Parker Solar Probe Detects Source of Solar Wind

The Sun flings charged particles and accompanying magnetic fields into the solar system, but how? NASA's Parker Solar Probe dives in to find out.

Solar System

The Sun Gets Its Close-up: Images from New Solar Telescope

The Daniel K. Inouye Solar Telescope shows some stunning detail on the Sun, including sunspots, fibrils, granules, and other solar textures.

solar flare

Solar System

The Sun's Ramping Up Activity — But Still Weaker Than in the Past

The Sun has recently experienced an uptick in activity, with lots of sunspots accompanied by flares, coronal mass ejections, and visible auroras — but experts still expect a mild solar cycle.

rainbow with black lines marking where different atoms have absorbed wavelengths of light

Solar System

What Is the Sun Made Of? New Data Deepens Debate

New data from a detector tucked under a mountain in Italy has shed light on what's inside the Sun.

ASO-S launch with sunset in background

Space Missions

Chinese Observatory Will Study Violent Events on the Sun

China has sent up the ASO-S space observatory to study solar flares, eruptions, and the Sun’s magnetic field.

rainbow with black lines marking where different atoms have absorbed wavelengths of light

Solar System

Mystery of the Sun's Chemical Makeup Lingers

Astronomers think they might have a solution to the conundrum of the Sun's chemical composition.

Solar Orbiter images of Sun

Solar System

Spotting Dots on the Sun

You’ve heard of sunspots, but how about Sun dots? A recent solar mission has snapped photos of tiny, bright dots on the Sun, and astronomers are contemplating their cause.

Naked eye sunspots

Explore the Night with Bob King

How to Observe and Measure Naked-eye Sunspots

As Solar Cycle 25 ticks up, naked-eye sunspots are becoming more frequent. They're not only fun to observe, but with this simple method you can determine just how big they are. We also have news on a bright supernova!

Halpha sun with prominences

Sun

How to Safely See a Solar Eclipse

Our star is an amazing object to observe, whether by eye or with optical aid. These time-tested tips will let you see the solar disk worry-free.

Observing the stars

Night Sky Sights

See the Sun from Other Stars

We journey to distant suns to look back at our solar system and see its place among the stars.

Artist's concept of probe above Alfven surface

Solar System

“Humanity Has ‘Touched’ the Sun”

On its eighth close pass, NASA’s record-breaking Parker Solar Probe entered our star’s atmosphere and “touched” the surface of the Sun.

Artist’s impression of the Ulysses spacecraft

Stellar Science

Measuring Solar Eruptions with a Rare Alignment

New analysis of a coronal mass ejection detected by the alignment of two spacecraft reveals that it experienced erosion and restructuring as it traveled.

Sunspots at solar minimum vs. maximum

Solar System

The Sun’s Activity Cycle Is Stabilizing

Solar Cycle 25 is here, and forecasts suggest the next decade of the Sun’s activity will mimic the last one — halting a 40-year trend.

The Sun's full disk

Solar System

European Solar Orbiter Takes Closest-ever Images of the Sun

The first images to be released from the European Space Agency’s Sun-imaging spacecraft show intriguing “campfires” that could help explain a solar mystery.

Solar flare

Solar System

New Evidence for Nanoflares?

Astronomers have spotted weak bursts of low-frequency radio emission coming from all over the Sun.

Stargazer's Corner: Adventures Under the Night Sky

95 Sunrises Along the Columbia Riverbank

Margaret Greenwood explores the changing location of sunrises throughout the year.

The Sun vs. Sun-like Stars

Stellar Science

How Lazy Is the Sun?

Astronomers studying hundreds of Sun-like stars were surprised to find that most of them are more active than the Sun. Why is the Sun different?

Solar Eclipse in 1900

Astronomy and Society

Amateur Filmmaker Captured Solar Eclipse — in 1900

In 1900, a man named John Nevil Maskelyne filmed a solar eclipse — the first of its kind.

Dunn Solar Telescope

Professional Telescopes

Sunspot Solar Observatory Reopens After Mysterious Shutdown

After a 10-day lockdown to cooperate with a criminal investigation, Sunspot Solar Observatory is back to looking at the Sun.