LightSail 2 is now marking three years of spaceflight, but is unlikely to celebrate a fourth anniversary.
The sun is the star at the center of our solar system.
Related Topics: Stars and Galaxies
Some low-Earth-orbit satellites are falling to Earth 10 times faster since the sun started acting out last year.
A sunspot nearly triple the size of Earth is within firing range of our planet and may send out medium-class flares in the near future.
The sun flexed its considerable magnetic muscles today (June 13), and two solar spacecraft captured the show on video.
On the 10th anniversary of the last transit of Venus, find out what makes these events so special and what else to look out for during the long wait for the next one.
NASA's sun-grazing spacecraft will make its 12th close flyby of our star on Wednesday (June 1), marking the halfway point of the mission.
People in New York can catch the gorgeous "Manhattanhenge" this Memorial Day weekend on May 29 and 30.
Reference Sunspots are cooler, planet-size regions of strong magnetic fields on the surface of the sun. Explore sunspots in more detail with our comprehensive guide.
Reference Coronal mass ejections (CMEs) are colossal expulsions of plasma and magnetic field from the sun's corona. Explore CMEs in more detail here in our guide.
A new record-breaking set of images of the sun captured by the Solar Orbiter probe during its close pass of the star in March reveals a plethora of never-before-seen details.
Reference There are five different types of solar flares. Discover what solar flares are, what causes them and the effects they have on Earth in our solar flare guide.
A partial solar eclipse coincided with sunset in April 2022. This image tracks the movements of the sun and eclipse stages.
Scientists are keeping an eye on a sunspot that fired off an X-class flare while "having an identity crisis," according to SpaceWeather.com.
Reference NASA's Parker Solar Probe is on a mission to study the sun closer than ever before. Learn more about the fastest spacecraft to date in our solar probe guide.
While our sun merrily blasted two moderate-size solar flares in time for Star Wars Day, auroras are likely not our destiny yet.
The active sun fired off a powerful X-class flare Tuesday (May 3), but likely not in the direction of Earth.