Aerogel Frozen Smoke

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Aerogel, also know as frozen smoke, is the world’s lowest density solid,clocking in at 96% air. If you hold a small piece in your  hand, it’s practically impossible to either see or feel, but if you poke it, it’s like styrofoam. It supports up to 4,000 times its own weight and can withstand a direct blast from two pounds of dynamite.

Moon, Jupiter and Moons

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Skygazers around planet Earth enjoyed the close encounter of planets and Moon in July 15′s predawn skies. And while many saw bright +Jupiter next to the slender, waning crescent, Europeans also had the opportunity to watch the ruling gas giant pass behind the lunar disk, occulted by the +Moon as it slid through the night. Clouds threaten in this telescopic view from Montecassiano, Italy, but the frame still captures Jupiter after it emerged from the occultation along with all four of its large Galilean moons. The sunlit crescent is overexposed with the Moon’s night side faintly illuminated by Earthshine. Lined up left to right beyond the dark lunar limb are +Callisto, +Ganymede, Jupiter, +Io and +Europa. In fact, Callisto, Ganymede, and Io are larger than Earth’s Moon, while Europa is only slightly smaller.