The Universe Nearby
Credit: 2MASS, T. H. Jarrett, J. Carpenter, & R. HurtExplanation: What does the universe nearby look like? This plot shows nearly 50,000 galaxies in the nearby universe detected by the Two Micron All Sky Survey (2MASS) in infrared light. The resulting image is anincredible tapestry of galaxies that provides limits on how the universe formed and evolved. The dark band across the image center is blocked by dust in the plane of our own Milky Way Galaxy. Away from the Galactic plane, however, each dot represents a galaxy, color coded to indicate distance. Bluer dots represent the nearer galaxies in the 2MASS survey, while redder dots indicating the moredistant survey galaxies that lie at a redshift near 0.1. Named structures are annotated around the edges. Many galaxies are gravitationally bound together to form clusters, which themselves are loosely bound into superclusters, which in turn are sometimes seen to align over even larger scale structures.
Titan’s Hazy History and the Potential for Life
Saturn’s moon Titan is the only moon in our solar system known to possess an atmosphere of any significance.
Ten times thicker than Earth’s, Titan’s atmosphere extends nearly 370 miles (600 km) above its frigid surface. It’s a literal chemical factory, where nitrogen and methane are zapped by the sun’s ultraviolet rays and transformed into organic molecules, some of which descend to the moon’s surface while others rise up above the clouds, creating a bluish high-level haze of hydrocarbons.
Titan’s atmosphere forms an opaque orange shroud that covers it and hides many of its surface features from view, keeping much of its details a mystery until the arrival of the Cassini-Huygens spacecraft in 2004.
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くまーっ！
お気に入りの木綿や麻のシャツ。こまめに洗濯していても次第に汗じみが残り黄ばんでくる事もしばしばです。 漂白剤を使っても元の真っ白な状態には戻らないこともあります。 そんな時には大きな鍋に水と洗剤と黄ばんだシャツを入れて火にかけます。 沸騰したら弱火にして、約３０分煮込みます。（時々中をかき混ぜることも忘れずに）火を止めて充分にすすいでから陰干しすると、驚くくらいに真っ白に仕上がります。 日頃はお風呂の残り湯を使って洗って下さい。 体から出た皮脂汚れって、水道水では溶けてくれないからです。 すすぎは水道水で構いません。 白洋舎クラスになると汗汚れの衣類は６０度のお湯で洗い、 ６０度のお湯で２度もすすいで徹底的に汚れを落としています。 干して乾いた後はなるべく涼しい場所で保管して下さい。
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