Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
A week of solar flares at one giant sunspot
The biggest sunspot on the face of the sun in more than two decades erupted on October 26 with its sixth substantial flare in a week.
October 27, 2014
Cool composite of Comet Siding Spring near Mars
Hubble image of close passage of Comet Siding Spring near Mars. The comet passed Mars at about a third the distance between Earth and the moon on October 19.
October 26, 2014
Starquake sets magnetar ringing like a bell
Astronomers have observed signals from a highly magnetized neutron star, indicating starquakes that set the neutron star ringing like a bell.
October 23, 2014
Video: 3D flight over Mars chaotic terrain
Get out your 3D glasses and watch a flyover of the weird landforms on Mars know as chaotic terrain.
October 23, 2014
Sun may delay plans for sending humans to Mars
Less solar activity indicates a weaker magnetic field on the sun. A weak field lets cosmic rays into the solar system, posing a radiation hazard for astronauts.
October 23, 2014
New 3D map of the cosmic web
A team of astronomers has created the first three-dimensional map of the adolescent universe, just 3 billion years after the Big Bang.
October 21, 2014
Video: Solar eclipse on October 23
Weather permitting, almost everyone in North America will be able to see the partial solar eclipse this Thursday.
October 20, 2014
Best photos: Comet Siding Spring sweeps past Mars
A sight never seen before in recorded history ... an encounter between Mars and a close-passing comet on October 19, 2014.
October 20, 2014
Comet Siding Spring’s near-miss of Mars was October 19
The close pass of Comet Siding Spring to Mars was exciting! Closest approach was October 19. Watch for photos from the event here at EarthSky.org.
October 19, 2014
Video: Comet Siding Spring’s close encounter with Mars
Here's a 2-minute video on the comet's October 19 near-miss of Mars, and how orbiting spacecraft will evade onslaught of dust particles from the comet.
October 19, 2014
