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Our Star
The sun is a star, a hot ball of glowing gases at the heart of our solar system. Its influence extends far beyond the orbits of distant Neptune and Pluto. Without the sun's intense energy and heat, there would be no life on Earth. And though it is special to us, there are billions of stars like our sun scattered across the Milky Way galaxy.

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Solar System's Youth Gives Clues to Planet Search
Solar System's Youth Gives Clues to Planet Search
Modeling results show where the injected gas and dust ended ups only 34 years after being injected at the disk's surface. It was injected 9 astronomical units from the central prostar and is now in the disk's midplane.Read More...
The Sun's Magnetic Field is about to Flip
The Sun's Magnetic Field is about to Flip
Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sun's vast magnetic field is about to flip.Read More...
Prime Time for PANSTARRS
Prime Time for PANSTARRS
This week is prime time for observing this comet. (Next opportunity, the year 108,013 +/- a few hundred or thousand years.)Read More...
Comet of the Century?
Comet of the Century?
Later this year, "Comet ISON" could blossom into a striking naked eye object visible even in broad daylight.Read More...
Earth at Perihelion
Earth at Perihelion
In January, our planet made its annual closest approach to the sun. But don't expect things to warm up.Read More...
Big Sun-Diving Comet Discovered
Big Sun-Diving Comet Discovered
Dr. Tony Phillips reports on his personal website -- spaceweather.com -- about a newly-discovered comet that may buzz the sun next year.Read More...
ISS Transit of Venus
ISS Transit of Venus
High above Earth, astronaut Don Pettit is preparing to photograph the June 5th Transit of Venus from space itself. The Expedition 31 crew will be the first people in history to see a Venus transit from space.Read More...
Solar Eclipse this Weekend
Solar Eclipse this Weekend
On Sunday, May 20th, the Moon will pass in front of the sun, transforming sunbeams across the Pacific side of Earth into fat crescents and thin rings of light.Read More...
Rubber Chicken Flies into Solar Radiation Storm
Rubber Chicken Flies into Solar Radiation Storm
Launching a rubber chicken into a solar storm might sound strange, but the students had good reason: They're doing an astrobiology project.Read More...
Curiosity, the Stunt Double
Curiosity, the Stunt Double
En route to the Red Planet, Mars rover Curiosity has experienced the strongest solar radiation storm since 2005. Researchers say this is part of Curiosity's job as a 'stunt double' for human astronauts.Read More...
Solar Eclipse over the USA
Solar Eclipse over the USA
Mark your calendar. On Sunday, May 20th, the sun is going to turn into a ring of fire. It's an annular solar eclipse--the first one in the USA in almost 18 years.Read More...
Comet Corpses in the Solar Wind
Comet Corpses in the Solar Wind
A paper published in today's issue of Science raises an intriguing new possibility for astronomers: unearthing comet corpses in the solar wind. The new research is based on dramatic images of a comet disintegrating in the sun's atmosphere last July.Read More...
Comet Lovejoy Plunges into the Sun ... and Survives
Comet Lovejoy Plunges into the Sun ... and Survives
Sungrazing Comet Lovejoy has shocked astronomers by surviving its "death plunge" into the sun. Must-see movies of the comet's passage through the sun's atmosphere are featured in today's story from Science@NASA.Read More...
Basics of the Analysis Procedure
Basics of the Analysis Procedure
The instruments employed at UCLA, UCSD, and Open University differ in many respects, but each has a method to free the solar oxygen atoms from the collection material, and each uses a mass spectrometer to separate and count the isotopes.Read More...
The Long, Slow Clean-Up
The Long, Slow Clean-Up
The Genesis mission brought important new evidence to scientists working to understand how the solar system formed, but it also brought an unprecedented challenge.Read More...
One Step Closer to Earth's Genesis
One Step Closer to Earth's Genesis
Kevin McKeegan's announcement at the 2008 Lunar and Planetary Science Conference that the pattern of oxygen isotopes on the Sun differs greatly from that of Earth took many planetary scientists by surprise.Read More...
The Sun Under Lock and Key
The Sun Under Lock and Key
Where do you think you would find the world's most valuable collection? You can make an awfully good argument for the Astromaterials Curation Labs at Johnson Space Center. That is where NASA keeps the Genesis solar wind samples, and much more.Read More...
The Big Question -- The Reason for the Genesis Mission
The Big Question -- The Reason for the Genesis Mission
Where did the world come from? An immense gas cloud, peppered with atoms made by stars, squeezed itself together so tightly that its center ignited into a nuclear furnace and became our sun. The remaining bits and pieces of the cloud, known as ...Read More...
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Previous
Previous
    1     2    
Next
Next
    Show All
Solar System's Youth Gives Clues to Planet Search
Solar System's Youth Gives Clues to Planet Search
Modeling results show where the injected gas and dust ended ups only 34 years after being injected at the disk's surface. It was injected 9 astronomical units from the central prostar and is now in the disk's midplane.Read More...
The Sun's Magnetic Field is about to Flip
The Sun's Magnetic Field is about to Flip
Something big is about to happen on the sun. According to measurements from NASA-supported observatories, the sun's vast magnetic field is about to flip.Read More...
Prime Time for PANSTARRS
Prime Time for PANSTARRS
This week is prime time for observing this comet. (Next opportunity, the year 108,013 +/- a few hundred or thousand years.)Read More...
Comet of the Century?
Comet of the Century?
Later this year, "Comet ISON" could blossom into a striking naked eye object visible even in broad daylight.Read More...
Earth at Perihelion
Earth at Perihelion
In January, our planet made its annual closest approach to the sun. But don't expect things to warm up.Read More...
Big Sun-Diving Comet Discovered
Big Sun-Diving Comet Discovered
Dr. Tony Phillips reports on his personal website -- spaceweather.com -- about a newly-discovered comet that may buzz the sun next year.Read More...
ISS Transit of Venus
ISS Transit of Venus
High above Earth, astronaut Don Pettit is preparing to photograph the June 5th Transit of Venus from space itself. The Expedition 31 crew will be the first people in history to see a Venus transit from space.Read More...
Solar Eclipse this Weekend
Solar Eclipse this Weekend
On Sunday, May 20th, the Moon will pass in front of the sun, transforming sunbeams across the Pacific side of Earth into fat crescents and thin rings of light.Read More...
Rubber Chicken Flies into Solar Radiation Storm
Rubber Chicken Flies into Solar Radiation Storm
Launching a rubber chicken into a solar storm might sound strange, but the students had good reason: They're doing an astrobiology project.Read More...
Curiosity, the Stunt Double
Curiosity, the Stunt Double
En route to the Red Planet, Mars rover Curiosity has experienced the strongest solar radiation storm since 2005. Researchers say this is part of Curiosity's job as a 'stunt double' for human astronauts.Read More...
Solar Eclipse over the USA
Solar Eclipse over the USA
Mark your calendar. On Sunday, May 20th, the sun is going to turn into a ring of fire. It's an annular solar eclipse--the first one in the USA in almost 18 years.Read More...
Comet Corpses in the Solar Wind
Comet Corpses in the Solar Wind
A paper published in today's issue of Science raises an intriguing new possibility for astronomers: unearthing comet corpses in the solar wind. The new research is based on dramatic images of a comet disintegrating in the sun's atmosphere last July.Read More...
Comet Lovejoy Plunges into the Sun ... and Survives
Comet Lovejoy Plunges into the Sun ... and Survives
Sungrazing Comet Lovejoy has shocked astronomers by surviving its "death plunge" into the sun. Must-see movies of the comet's passage through the sun's atmosphere are featured in today's story from Science@NASA.Read More...
Basics of the Analysis Procedure
Basics of the Analysis Procedure
The instruments employed at UCLA, UCSD, and Open University differ in many respects, but each has a method to free the solar oxygen atoms from the collection material, and each uses a mass spectrometer to separate and count the isotopes.Read More...
The Long, Slow Clean-Up
The Long, Slow Clean-Up
The Genesis mission brought important new evidence to scientists working to understand how the solar system formed, but it also brought an unprecedented challenge.Read More...
One Step Closer to Earth's Genesis
One Step Closer to Earth's Genesis
Kevin McKeegan's announcement at the 2008 Lunar and Planetary Science Conference that the pattern of oxygen isotopes on the Sun differs greatly from that of Earth took many planetary scientists by surprise.Read More...
The Sun Under Lock and Key
The Sun Under Lock and Key
Where do you think you would find the world's most valuable collection? You can make an awfully good argument for the Astromaterials Curation Labs at Johnson Space Center. That is where NASA keeps the Genesis solar wind samples, and much more.Read More...
The Big Question -- The Reason for the Genesis Mission
The Big Question -- The Reason for the Genesis Mission
Where did the world come from? An immense gas cloud, peppered with atoms made by stars, squeezed itself together so tightly that its center ignited into a nuclear furnace and became our sun. The remaining bits and pieces of the cloud, known as ...Read More...
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