As the inevitable launch of humans to Mars slowly approaches over the coming decades, we are using our best technology to study our neighbour in detail. With multiple orbiting satellites and ground surveyors, we are slowly learning more about the geology, climate, environment, and history of Mars. It feels as if every new discovery is a surprise, and we never expected Mars to be such a dynamic and complex world. With science and technology improving every year, humanity is focussing efforts on the red planet. The latest incredible discovery comes from radar data from the Mars Reconnaissance Orbiter (MRO). The...
Some of the moons of gas giant planets have a unique property: They are worlds that have a source of heat other than the Sun. The huge tidal forces imparted by their host planet and fellow moons cause their crust to grow and shrink, creating huge friction and heating the rock. It means that even if these moons are far from the warmth of the Sun, they can still host liquid water. There are two moons in our own solar system that are especially enticing: Jupiter’s second moon Europa, and the icy moon of Saturn known as Enceladus. Each host...
As the Dawn Spacecraft readies for orbit insertion only a week from now, the images coming in are getting sharper and sharper. Once the craft is fully in orbit its first task will be to map the surface of the planet in high definition. Even on the last few weeks of the journey to Ceres, we have seen increasingly clear images, and have already started asking ‘What the heck is that?’ This week’s ‘what the heck are we looking at?’ involves this apparent double bright spot on Ceres, imaged on February 19th from a distance of 46,000 Km, about an...
When the temperature is just right, and the sky is clear, you can see some amazing phenomenon from the Sun. It isn’t your eyes playing a trick on you, it just means you’re seeing the right conditions for a really amazing experience. Sun Dogs, known scientifically as Parhelia, typically appear as two bright patches on either side of the Sun. Occasionally they reveal rainbow colours in their pattern, but can be quite bright. They are most easily visible when the Sun is low in the sky. Sun Dogs are made from the refraction of ice crystals in the upper atmosphere....
This week there were just too many fantastic photo releases to pick just one and stick with it, so here are some of the great stories popping up with fantastic images to accompany them: Fine Detail From Rosetta on 67P This amazing shot from the Rosetta orbiter shows such incredible detail as comet 67P catches light from the sun. The shadows are what makes this image spectacular as you can see so many fine features. The other noteworthy part of the image is the bright streaks of material coming off the comet in the background. As the comet and the...
