What if the other planets were as close as the moon. -- I wonder if the reason the more distant planets are so much larger is because they are further away from the sun. The planets that are closer to the sun seem to all be much much smaller.
Andromeda's Colorful Rings - The ring-like swirls of dust filling the Andromeda galaxy stand out colorfully in this new image from the Herschel Space Observatory, a European Space Agency mission with important NASA participation.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.