Solar System Exploration
By the Numbers
By the Numbers
By the Numbers
By the Numbers
Measurements from NASA’s New Horizons spacecraft are revising our estimates of one key property of the interstellar medium: how thick it is.
New Evidence Our Neighborhood in Space Is Stuffed With Hydrogen
When scientists downlinked data from Parker Solar Probe's sixth orbit, there was a surprise waiting for them: a sungrazing comet.
Two Views of a Sungrazing Comet
On Oct. 16, 2020, the Moon photobombed NASA’s Solar Dynamics Observatory’s view of the Sun.
NASA's Solar Dynamics Observatory Catches a Lunar Transit
In a new study, scientists looked at sunspots at low resolution to simulate a view of distant stars.
New Look at Sunspots Helps Scientists Understand Life Around Other Stars
In a paper published in Nature Astronomy, researchers report the first ever clear images of nanojets.
NASA's IRIS Spots Nanojets: Shining Light On Heating the Solar Corona
The Sun is stirring from its latest slumber. Sunspots and flares are bubbling from the Sun's surface – signs that a new solar cycle has started.
What Will Solar Cycle 25 Look Like?
Surveying sunspots is the most basic of ways we study how solar activity rises and falls over time, and it’s the basis of how we track the solar cycle.
How Scientists Around the World Track the Solar Cycle
Experts from NASA and NOAA discuss their analysis and predictions for the new solar cycle.
Solar Cycle 25 Is Here, Scientists Explain What That Means
The proposals are for missions to improve our understanding of the Sun and the space environment with which it interacts around Earth.
NASA Selects Proposals for New Space Environment Missions
Astronomers report the discovery of 95 objects known as brown dwarfs, many within a few dozen light-years of our Sun.
Citizen Scientists Discover Dozens of New Cosmic Neighbors
Recent observations show that an unusually weak spot in Earth's magnetic field is expanding, weakening, and splitting.
NASA Researchers Track Slowly Splitting 'Dent' in Earth's Magnetic Field
In 2009, NASA launched a sounding rocket to measure helium in the Sun's atmosphere.The results were recently published.
Sounding Rocket Finds Helium Structures in Sun's Atmosphere
Scientists have developed a new prediction of the shape of the bubble surrounding our solar system.
Uncovering Our Solar System's Shape
Scientists have developed a new model that predicted seven out of nine of the Sun’s biggest recent flares.
NASA Sun Data Helps New Model Predict Big Solar Flares
The first images from ESA/NASA’s Solar Orbiter are now available to the public, including the closest pictures taken of the Sun.
Solar Orbiter Returns First Data, Snaps Closest Pictures of Sun
NASA’s Parker Solar Probe was at the right place at the right time to capture a unique view of comet NEOWISE.
NASA's Parker Solar Probe Spies Comet NEOWISE
A comet visiting from the most distant parts of our solar system is putting on a spectacular nighttime display.
Comet NEOWISE Slides by Sun, Provides Treat for Observers
Which way the solar wind blows has new importance as NASA again prepares to send astronauts to the Moon.
NASA Spacecraft Helps Identify Crucial Solar Radiation Patterns
As of June 2020, NASA’s Solar Dynamics Observatory – SDO – has now been watching the Sun non-stop for over a full decade.
Watch a 10-Year Time Lapse of Sun From NASA's SDO
Researchers have reset the timeline for when stars like our Sun start blasting high-energy radiation into space.
X-rays From a Newborn Star Hint at Our Sun's Earliest Days
A citizen scientist has spotted a never-before-seen comet in data from SOHO — the 4,000th comet discovery in the spacecraft’s 25-year history.
4,000th Comet Discovered by SOHO Solar Observatory
A confluence of events provided a unique opportunity for scientists to study how the Sun influences conditions throughout space.
Parker Solar Probe Teams Up With Observatories for 4th Solar Encounter
Now, for the first time, scientists have used an entire solar cycle of data from NASA’s IBEX spacecraft to study how the heliosphere changes over time.
NASA's IBEX Charts 11 Years of Change at Boundary to Interstellar Space
Images from OSIRIS-REx show rocks on asteroid Bennu appear to be cracking.
OSIRIS-REx Discovers Sunlight Can Crack Rocks on Asteroid Bennu
NASA’s STEREO-A spacecraft captured these images of comet ATLAS swooping by the Sun.
STEREO Watches Comet ATLAS as Solar Orbiter Crosses Its Tail