NASA Space Alerts (@NASASpaceAlerts) / X

NASA Space Alerts

3,304 posts

NASA Space Alerts

@NASASpaceAlerts

@NASA official notifications on cosmic activity in near-Earth space including solar events, asteroids, comets, and meteors.

Washington, D.C.

Joined March 2009

NASA Space Alerts
@NASASpaceAlerts
15h
It’s #SunDay! Here’s your space weather report for the week of June 26 - July 2: • 1 X-class flare • 24 M-class flares • 50 coronal mass ejections • 0 geomagnetic storms This video from NASA’s Solar Dynamics Observatory (SDO) shows the week’s activity. The Sun put on its
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NASA Space Alerts
@NASASpaceAlerts
Jun 30
The Sun emitted a strong solar flare on June 30, peaking at 4:50 p.m. ET. NASA’s Solar Dynamics Observatory captured an image of the event, which was classified as X1.1.
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NASA Space Alerts
@NASASpaceAlerts
Jun 30
Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground. However — when intense enough — they can disturb the atmosphere in the layer where GPS & communications signals travel.
4.9K
NASA Space Alerts
@NASASpaceAlerts
Jun 30
To see how such space weather may affect Earth, check out @NWSSWPC, the U.S. government’s official source for space weather forecasts, watches, warnings, and alerts.
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NASA Space Alerts
@NASASpaceAlerts
Jun 30
Today, June 30, is also National Meteor Watch Day! Celebrate with us by heading outside on a clear evening and spending some time under the stars. Learn more about meteors and asteroids on our latest #WatchTheSkies blog: go.nasa.gov/4wauX6Y
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NASA Space Alerts
@NASASpaceAlerts
Jun 30
🦖The dinosaurs didn’t have a space program. NASA’s Planetary Defense Program finds and tracks potentially hazardous asteroids and tests methods to keep us safe on Earth. This International Asteroid Day, learn more about our planetary defenders: plus.nasa.gov/video/planetar…
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NASA Space Alerts
@NASASpaceAlerts
Jun 28
It’s #SunDay! Here’s your space weather report for the week of June 19 - 25: • 4 M-class flares • 0 C-class flares • 42 coronal mass ejections • 0 geomagnetic storms This video from NASA’s Solar Dynamics Observatory (SDO) shows the week’s activity. All the action this
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NASA Space Alerts
@NASASpaceAlerts
Jun 15
#MeteorSighting: Eyewitnesses in several U.S. states across the southeast reported a bright fireball on the night of June 14 at 10:26 p.m. CDT. The meteor, which was also captured by three NASA meteor cameras, was first spotted above Tupelo, Mississippi, moving to the northwest
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NASA Space Alerts
@NASASpaceAlerts
Jun 14
It’s #SunDay! Here’s your space weather report for the week of June 5 - 11: • 1 M-class flare • 5 C-class flares • 36 coronal mass ejections • 1 geomagnetic storm (as of June 12, though another one is currently forecast for June 13) This video from NASA’s Solar Dynamics
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NASA Space Alerts
@NASASpaceAlerts
Jun 7
It’s #SunDay! Here’s your space weather report for the week of May 29 - June 4: • 1 X-class flare • 6 M-class flares • 47 coronal mass ejections • 0 geomagnetic storms This video from NASA’s Solar Dynamics Observatory (SDO) shows the week’s activity. This week’s main event
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NASA Space Alerts
@NASASpaceAlerts
Jun 3
The Sun emitted a strong solar flare on June 3, peaking at 7:28 a.m. ET. NASA’s Solar Dynamics Observatory captured an image of the event, which was classified as X1.0. go.nasa.gov/4o5POFG
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NASA Space Alerts
@NASASpaceAlerts
Jun 3
Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground. However — when intense enough — they can disturb the atmosphere in the layer where GPS & communications signals travel.
7.9K
NASA Space Alerts
@NASASpaceAlerts
Jun 3
To see how such space weather may affect Earth, check out @NWSSWPC, the U.S. government’s official source for space weather forecasts, watches, warnings, and alerts.
6.3K
NASA Space Alerts
@NASASpaceAlerts
Jun 2
#MeteorSighting: Eyewitnesses in Ohio and Michigan reported a bright meteor on Monday, June 1, at 10:41p.m. EDT. The data puts first detection of the fireball above the Ohio area near Lima. The meteor moved north-northwest at approximately 49,900 mph before disintegrating above
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NASA Space Alerts
@NASASpaceAlerts
Jun 1
UPDATE: @NASA can confirm a fireball over New England at 2:06 p.m. EDT on Saturday, May 30, 2026. The meteor was about 5 feet (1.6 meters) in diameter with a mass of 5.6 metric tons and entered Earth’s atmosphere at roughly 42,000 mph. The meteor traveled through the atmosphere
NASA Space Alerts
@NASASpaceAlerts
May 30
#MeteorSighting: Eyewitnesses in New England and @NOAA’s GOES-19 satellite reported a bright fireball on Saturday, May 30, at 2:06 p.m EDT accompanied by a loud noise. The meteor appears to have fragmented at an altitude of 40 miles over northeast MA and southeast NH. The energy
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NASA Space Alerts
@NASASpaceAlerts
May 31
It’s #SunDay! Here’s your space weather report for the week of May 22 - 28: • 1 M-class flare • 0 C-class flares • 46 coronal mass ejections • 0 geomagnetic storms This video from NASA’s Solar Dynamics Observatory (SDO) shows the week’s activity. Most of the action this
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NASA Space Alerts
@NASASpaceAlerts
May 30
#MeteorSighting: Eyewitnesses in New England and @NOAA’s GOES-19 satellite reported a bright fireball on Saturday, May 30, at 2:06 p.m EDT accompanied by a loud noise. The meteor appears to have fragmented at an altitude of 40 miles over northeast MA and southeast NH. The energy
1.5M