NASA's WISE has turned up no evidence of the hypothesized celestial body in our solar system commonly dubbed "Planet X."

Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 June 13 Explanation: You can see four planets in this serene sunset image, created from a series of stacked digital exposures captured near dusk on May 25. The composite picture follows the trai
ã2012å¹´11æ22æ¥ ã¨ã¼ãããå天天æå°ã 太é½ç³»ã®å°å¤©ä½ãèå¾ã®æãé ããæé£ãã¯ããã®å¤©ä½ã«ã¤ãã¦æ å ±ãå¾ã絶好ã®æ©ä¼ã ãå¥çæã¨ã¨ãã«æºææã«åé¡ããããã±ãã±ã®æé£è¦³æ¸¬ãããè¬ã«ã¤ã¤ã¾ãããã®å§¿ããããã«ãªã£ã¦ããã æºææãã±ãã±ã®è»éã天ä½ã®ä½ç½®ã¯2012å¹´11ææç¹ã®ãã®ãã¯ãªãã¯ã§ç«ä½è¡¨ç¤ºï¼ã¹ãã©ããã²ã¼ã¿ã§ä½æï¼ ãã±ãã±ã®æ³åå³ãå¥çæã®ç´3åã®2ã»ã©ã®å¤§ããã ãã¯ãªãã¯ã§æ¡å¤§ï¼æä¾ï¼ESO/L. Calçada/Nick Risinger (skysurvey.org)ï¼ 2011å¹´4æ23æ¥ã«ãæºææãã±ãã±ããã¿ã®ã座ã®ææNOMAD 1181-0235723ãé ãæ§åãååçã§è¦³æ¸¬ããããJosé Luis Ortizããï¼ã¹ãã¤ã³ã»ã¢ã³ãã«ã·ã¢å®å®ç©çå¦ç 究æï¼ãã¯ããã®1åéã»ã©ã®ç¾è±¡ãããªã¨ãã©ã¸ã«ã®æé é¡ã§ã¨ãããã èå¾ã®æã®å ããã±ãã±ã«é ãã
I've asked you all for input twice, and listened to (most of) your suggestions, and checked the Kuiper belt section with Mike Brown, so finally I'm ready to post the final version of my scale solar system presentation slides. My motivation for creating these is to help people who do public presentations -- teachers, professors, informal educators -- by providing a correctly scaled, reasonably corr
The Pic du Midi observatory in France is renowned for its very stable atmospheric conditions, allowing high resolution pictures to be taken. Our air commonly blurs out finer details of astronomical objects; there are ways to compensate, but it's nice to not have to worry about it in the first place. So pictures of the planets taken from the 2800-meter-elevation observatory are surpassingly beautif
ãã®ç»åã大ããªãµã¤ãºã§è¦ã æ以å¤ã«ããå°çã«æ¥è¿ãã¦ããããã²ã¨ã¤ã®ææãããããããªææãåå¨ããä¸çã縦é·ã®ãã¬ã¼ã å ã§ãæ°ãããã©ããä½ãä¸ããããã¤ãµã³ã»ã¹ãããæ°ã«ããä½åã ã½ã¼ã¹ï¼Unbelievable Planet Scenes by Nathan Spotts (10 pics)
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These four images of Neptune were taken by NASA's Hubble Space Telescope during the planet's 16-hour rotation. The snapshots were taken at roughly four-hour intervals, offering a full view of the blue-green planet. Today marks Neptune's first orbit around the Sun since it was discovered nearly 165 years ago. These images were taken to commemorate the event. The Hubble images, taken with the Wide F
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