This image, released by NASA a few days ago, overlays a year's worth of photographs of the Sun, revealing the migration of active regions towards the equator.

Two days ago, I streamed history being made for the first time ever online, and witnessed the Philae lander's touchdown on Rosetta's comet. The journey took 10 years, 6.4 billion kms away from here, and a 7 hour long landing.

Unfortunately, it was an awkward landing where Philae landed approximately 1km away from its intended landing site that currently, one of its 3 legs is not on the surface of the comet and it itself is oriented in a way that no sufficient sunlight is being recieved enough to charge its batteries ever 12 hour rotation.


At the moment, plans to try to "hop" the robot back into a position for enough sunlight are being studied, hopefully in time to execute them before Philae dies out sometime between next Friday and Saturday. ...

The Sun, through an H-alpha filter, which captures a narrow band of light containing the frequency of photons emitted when a hydrogen's electron drops from the 3rd energy level to the 2nd.

Europa, a moon of Jupiter, is a prime candidate for life in our solar system beyond Earth. It contains water and is also the only known solar system body to have plate tectonics.

Here's what Venus would look with water, and without its thick CO2 atmosphere

When we think of Venus, we envision a planet that'd make a great place for hell - fiery red, extremely hot, and toxic. However, a new study makes an argument that Venus may have once been able to support life, until a mysterious resurfacing event took all that away about 700 million years ago.

According to planetary scientist Michael Way from NASA's Goddard Institute for Space Studies, Venus may have had a stable climate for billions of years.

"It is possible that the near-global resurfacing event is responsible for its transformation from an Earth-like climate to the hellish hot-house we see today."

The research – presented last week at the EPSC-DPS Joint Meeting 201 ...

After decades of dreaming and preparation, scientists have finally put the Rosetta spacecraft into orbit around a comet. And now the Rosetta is about to land!

I learned about something called axial precession in astronomy class several years ago, which is the idea that as something rotates along its axis, it will slowly trace out a cone if the weight of the object isn't equally distributed. In the case of Earth, Earth isn't a perfect sphere as many of us may think it is -- it actually bulges out in the middle enough for it to allow this phenomenon to occur. At the time, all I really took from this concept was how fascinating it is for the north axial pole to move 1° every 72 years from where it is now, and complete one full cycle every 26 000 years. However, I never managed to understand how this concept could fit in to my understanding of why ice ages[1] occur, and why they too follow a specific ...