22 July 2015, 02:04 PM ET
Not only has NASA’s New Horizons mission confirmed that Pluto has an extended atmosphere, after its historic flyby on July 14, the spacecraft observed a “cavity” in the solar wind, revealing a long plasma tail reminiscent of a comet’s ion tail.
22 July 2015, 07:00 AM ET
The Curiosity rover on Mars has turned its cameras skyward and found sunspots brewing on the far side of the sun, a view that's impossible to get from Earth.
20 July 2015, 03:00 PM ET
NASA released today (July 20) the first image of the sunlit side of Earth taken by the Deep Space Climate Observatory (DSCOVR) spacecraft from its final science orbit, and the beautiful photo has already made quite an impact.
12 July 2015, 02:47 AM ET
NASA's New Horizons probe captured amazing images of Pluto, scientists revealed details about a proposed superpowerful space telescope and NASA announced its first four commercial-crew astronauts. Here are Space.com's top stories of the week.
08 July 2015, 07:00 AM ET
Scientists knew Neptune's magnetic field was strange, just not this strange: Researchers reconstructed the magnetic field of the distant planet and found a field constantly in flux, tilted and bubbling out to one side.
07 July 2015, 03:03 PM ET
Neptune's rotational axis (28.3°) is a little more tilted than Earth's (23.5°) and, because it has no solid surface, its equatorial atmosphere spins more slowly (18 hrs.) than its magnetic field (16 hrs.).
07 July 2015, 07:01 AM ET
Interstellar travel could be humanity's greatest challenge — or humanity's greatest mistake. A Q&A with author Kim Stanley Robinson on his new novel, "Aurora," explores the feasibility of interstellar travel, artificial intelligences, and storytelling.
29 June 2015, 11:11 AM ET
Examining the sizable solar flare of March 11th, 2015, NASA's Interface Region Imaging Spectrograph (IRIS) mission captured the best Temporal and spatial resolution yet.
27 June 2015, 02:52 AM ET
For five hours, the sun's radiation created a stunning display over the dark skies of Maine.
26 June 2015, 01:00 PM ET
An active sunspot has been blasting coronal mass ejections in our direction, creating fantastic northern lights displays much further south than usual. In this case, Mike Taylor (miketaylorphoto.com) captured a multi-colored display.
25 June 2015, 12:58 PM ET
The northern lights, also known as the aurora borealis, painted the sky with brilliant ribbons of color this week, and the colorful displays could continue, following another solar explosion spotted by NASA.
25 June 2015, 09:56 AM ET
Sunspot AR12371 has been very busy, erupting with M-class flares that blasted coronal mass ejections (CME) toward Earth. Auroras have been seen as far south as Arizona.
24 June 2015, 02:54 PM ET
Astrophotographer John Chumack (galacticimages.com) captured about 1.5 hours of aurora images on March 31st, 2015, and time-lapsed them. He used a Canon 6D DSLR with a Star Adventurer panning device.
23 June 2015, 11:34 AM ET
Auroras reached as far south as Philadelphia yesterday (June 22) after a massive burst of particles was ejected from the sun and pummeled Earth's atmosphere. This strong solar storm continues to rage, and auroras are expected be visible again tonight.
19 June 2015, 08:57 AM ET
On it’s way over the limb, as the Sun rotates, sunspot AR2365 popped a massive coronal mass ejection into space on 18 June 2015. The cloud of charged plasma was not, fortunately, moving along the line between Earth and Sun.
16 June 2015, 07:01 AM ET
The sun is constantly roiling with activity, and every so often, it ejects a huge cloud of magnetized gas particles. If these particles hit Earth, they can bring power grids, GPS navigation and communications to a standstill as they're blasted by electrom
30 May 2015, 07:30 AM ET
A giant eruption from the sun that scientists thought would hit Earth in 2014 missed because the sun's magnetic field channeled it away from the planet in an unexpected way, researchers say.
20 May 2015, 05:45 PM ET
Alien planets likely experience "space weather," just like Earth's solar system. A team of scientists is trying to determine if such weather could make other planets inhospitable to life.
17 May 2015, 09:17 AM ET
From the coast of Japan to a dragon selfie, don't miss these amazing space images of the week for May 17, 2015.
10 May 2015, 09:05 AM ET
Russia's failed Progress 59 cargo spacecraft fell back to Earth, SpaceX's Dragon crew capsule launched on its first big test and the sun fired off its most powerful flare of 2015 so far. Here's a look at Space.com's top stories of the week.
08 May 2015, 09:46 PM ET
From espresso in space to a green and gold aurora, don't miss these amazing space images of the week for May 10, 2015.
07 May 2015, 03:00 PM ET
Researchers have reproduced a wide array of life's building blocks in a scenario involving meteorites and the solar wind, suggesting that such chemicals may exist on many bodies in our solar system.
06 May 2015, 06:23 AM ET
The X-class solar flare — the most powerful class of sun storm — erupted Tuesday from a sunspot called Active Region 2339, peaking at 6:11 p.m. EDT. NASA's Solar Dynamics Observatory spacecraft captured a gorgeous video of the flare.
05 May 2015, 07:42 PM ET
Sunspot AR2339 unleashed an X2.7 solar flare on May 5th, 2015. A radio blackout alert was issued for areas over the Pacific Ocean by NASA/NOAA. NASA's Solar Dynamics Observatory (SDO) captured the fireworks in multiple wavelengths.
04 May 2015, 09:51 AM ET
Astrophotographer John Chumack (galacticimages.com) captured 2 hours and 40 minutes of northern lights images in March 2015, and time-lapsed them into 3 minutes of geomagnetic amazement.
04 May 2015, 07:13 AM ET
Ropes of hot material that twist and writhe on the surface of the sun appear in unprecedented detail thanks to new observations.
29 April 2015, 03:30 PM ET
Jupiter's aurora — constant curtains and waves of electric-blue colors high in the murky brown atmosphere — flare up because of an effect that has nothing to do with the sun and everything to do with the gas giant's moons.
06 April 2015, 02:22 PM ET
Thanks to instruments on board NASA's New Horizon's spacecraft, which will fly by Pluto this summer, scientists are able to get an unprecedented look at the space weather near the dwarf planet.
23 March 2015, 01:07 PM ET
Chad Blakley (lightsoverlapland.com) captured unusual arcing auroras forming a corona over Abisko National Park on Mar. 14th, 2015.
21 March 2015, 04:00 PM ET
From St. Patrick's day in space to a spectacular solar eclipse, don't miss these amazing space images of the week for March 21, 2015.
19 March 2015, 04:26 PM ET
A dark line more than half a million miles long curves across the lower half of the sun in a gorgeous photo snapped by a NASA spacecraft. The line — what scientists call a solar filament — is longer than 67 Earths lined up side-by-side.
18 March 2015, 12:31 PM ET
Particles within a comet's tail can quickly whip up to the speed of the solar wind, according to observations of a comet in 2013.
18 March 2015, 11:37 AM ET
Green auroras danced in skies around the world last night thanks to a massive solar storm that super-charged the cosmic light displays for St. Patrick's Day.
18 March 2015, 11:00 AM ET
Space.com readers sent in their photos of the amazing auroras in 2015, including views captured during an intense geomagnetic storm on March 17-18, 2015.
17 March 2015, 05:19 PM ET
Auroras around the world could be super-charged tonight thanks to a severe solar storm impacting Earth, but even if bad weather hinders your view of the northern lights, you can still catch them live in a webcast online.
17 March 2015, 12:45 PM ET
A massive solar storm is bombarding Earth today (March 17), sparking stronger than normal auroras for St. Patrick's Day. The solar storm poses no threat to satellites, but may affect GPS and radio signals.