The summer solstice is here. What to know about the longest day of the year
Peak sunshine has arrived in the Northern Hemisphere—the summer solstice.
Planetary Sciences
Jun 20, 2025
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Page 2: Research news on The Sun
Will Europa become a habitable world when the sun becomes a red giant?
People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost certainly spell the end of life ...
Planetary Sciences
May 28, 2025
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Is this the first hint of Planet Nine?
The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, along with dwarf planets like Pluto, dozens of moons, and ...
Astronomy
Apr 30, 2025
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The sun's natural gravitational lensing is more powerful than you thought
Let's turn the sun into a telescope. In fact, we don't have to do any work—we just have to be in the right spot.
Astronomy
Apr 23, 2025
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The most metal-poor stars are living fossils from the beginning of the universe
Our sun, like all stars, is made mostly of hydrogen and helium. They are by far the most abundant elements, formed in the early moments of the universe. But our star is also rich in other elements astronomers call metals: ...
Astronomy
Apr 17, 2025
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Bright comet's tail dazzles in images from spacecraft
From Jan. 11 to 15, 2025, a bright comet surged through images from the ESA (European Space Agency) and NASA SOHO (Solar and Heliospheric Observatory) spacecraft. Called C/2024 G3 (ATLAS), the comet made its closest pass ...
Astronomy
Jan 22, 2025
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NASA celebrates Edwin Hubble's discovery of a new universe
For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it—the flickering star is 2.2 million light-years away, and is 1/100,000th ...
Astronomy
Jan 15, 2025
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NASA is developing solutions for lunar housekeeping's biggest problem: Dust
Through the Artemis Program, NASA will send the first astronauts to the moon since the Apollo Era before 2030. They will be joined by multiple space agencies, such as the ESA and China, who plan to send astronauts (and "taikonauts") ...
Space Exploration
Dec 23, 2024
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Observations suggest sun-like stars emit superflares once per century
There is no question that the sun is a temperamental star, as this year's unusually strong solar storms show. Some of them led to remarkable auroras even at low latitudes. But can our star become even more furious?
Astronomy
Dec 12, 2024
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Video: Our sun is the star in a new simulation
NASA supercomputers are shedding light on what causes some of the sun's most complex behaviors. Using data from the suite of active sun-watching spacecraft currently observing the star at the heart of our solar system, researchers ...
Astronomy
Nov 21, 2024
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