Solar System
Once Upon a Time There Was a Spacecraft Called Rosetta…
…and that time is now! ESA's Rosetta spacecraft is just over a mere two weeks away from its arrival at…
Is Our Solar System Weird?
Is our Solar System normal? Or is it weird? How does the Solar System fit within the strange star systems…
What’s Inside Jupiter?
Jupiter is like a jawbreaker. Dig down beneath the swirling clouds and you'll pass through layer after layer of exotic…
A New Image of Europa Emerges
Eureka – it's Europa! And a brand-new image of it, too! (Well, kinda sorta.) The picture above, showing the icy moon's…
Rosetta Watches Comet 67P Tumbling Through Space
This is really getting exciting! ESA's Rosetta spacecraft (and the piggybacked Philae lander) are in the home stretch to arrive at Comet…
How Big is Rosetta’s Comet?
Pretty darn big, I'd say. The illustration above shows the relative scale of the comet that ESA's Rosetta and Philae…
Rosetta Detects Water on its Target Comet
It's no surprise that there is a lot of water in comets. The "dirty snowballs" (or dusty ice-balls, more accurately)…
New Horizons Wakes Up for the Summer
While many kids in the U.S. are starting their school summer vacations, New Horizons is about to get back to work! Speeding…
Why Isn’t the Asteroid Belt a Planet?
It seems like there's a strange gap in between Mars and Jupiter filled with rocky rubble. Why didn't the asteroid…
ESA Marks 50 Years of Cooperative Space Innovation
In 1964 the European Launcher Development Organisation (ELDO) and the European Space Research Organisation (ESRO) were founded, on February 29 and March…