Sunspot AR3767 erupted with a X1.7-class solar flare, followed by an X1.1-class flare from sunspot AR3780. NASA's Solar Dynamics Observatory captured the fireworks. Footage courtesy: NASA / SDO and the AIA, EVE, and HMI science teams,...

Comet Nishimura came into NASA's STEREO-A spacecraft's field of view. The solar wind was interacting with the tail of the comet in the footage. Credit: NASA/STEREO/Karl Battams | edited by Space.com's Steve Spaleta Music: Falling Clouds...

“Producing Heat” explains the ways heat is produced.

I traveled to Casper, Wyoming to experience totality—a complete solar eclipse. HD Eclipse video by Erika Valkovicova

The tremendous growth happening in Africa presents humanity with a once-in-a-species opportunity: to make (nearly) an entire continent skip development of dirty fossil fuels, and be powered by renewable energy instead.

The three human figures and two animals that make up the Blythe Geoglyphs - or Blythe Giant Intaglios - are enormous. So big in fact, that they can’t be fully appreciated from the ground. But the figures were carved into the earth long...

Space weather can have a major effect on the technology we rely on. And a large solar flare could cause the most significant weather threat because so much of essential services are powered by a functioning electrical grid and a...

What Parker Solar Probe Heard Around the Sun.

Everything you could want to know about Venus.

Everything you could want to know about Jupiter.

Betelguese, a red super-giant star, could be breaking the laws of physics.

The weird effects of Einstein's theory of gravitational time dilation.

Find out how you can view T. Coronae Borealis, the new visitor in our night sky.

Why shouldn't we throw garbage into the sun? Find out in this return of our series 'Astrum Answers'.

Supralateral arcs, ice pillars and sun pillars.

The Sungrazer comets that were discovered minutes before they vapourised.

A black body is a theoretical or imaginary object that perfectly absorbs all incoming electromagnetic radiation, and also emits radiation, like heat and visible light, based on its temperature. A black body is considered theoretical...

Solar and lunar eclipses are celestial phenomena that occur when the sun, moon and Earth align in a way that either the moon casts a shadow on Earth or the latter casts a shadow on the moon. So what are the similarities and differences...

Since Earth completes one revolution around the sun in 1 year, it would make sense to think that after the completion of year, Earth would be exactly at the same spot where it was at the beginning of the year, wouldn't it? But is it...

Or geomagnetic storm, a severe disruption of the Earth's magnetosphere that can cripple satellites, and even cause severe damage to electrical systems on the ground. A Twig Science Glossary Film. Key scientific terms defined in just 60...

The most well-known comet, and brightest of the comets that have a relatively short period orbit. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig...

The explosion of a massive star at the end of its life. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce abstract...

The effect caused by some atmospheric gases trapping heat close to a planet's surface. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...

A small icy body in the Solar System, with a solid nucleus of rock, dust, ice, and frozen gases such as carbon dioxide, carbon monoxide, and ammonia. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using...