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If a catalyst affects the forward and the reverse reactions differently - e.g. accelerates the one more than the other and so shifts the chemical equilibrium - the second law of thermodynamics is violated. Wikipedia explains why in the following idiotic way: Wikipedia: "The second law read more...

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Fuzzy Pinwheel M33, the Triangulum Galaxy, whirls through space like a big fuzzy pinwheel. Stellar nurseries (reddish blobs) line the galaxy's spiral arms, while lanes of dark dust block the light of many stars. The galaxy is about three million light-years away, in the constellation Triangulum, which is well up in the east as darkness falls on November nights. [Alexander Meleg/Wikipedia] November?s evening skies offer constellations with great names, intriguing back-stories, and beautiful read more...

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Artist?s impression of a SupernovaCredit: NASA/ESA/G. Bacon (STSci)iPTF14hls ?grew ?bright ?and ?dim ?again ?at ?least ?five ?times ?over ?two ?years. ?This ?behavior ?has ?never ?been seen ?in ?previous ?supernovae, ?which ?typically ?remain ?bright ?for approximately 100 days and ?then fade. Adapted from Arcavi et ?al. 2017, ?Nature. Credit: LCO/S. ?Wilkinson An image taken ?by ?the ?Palomar ?Observatory ?Sky Survey ?reveals ?a ?possible ?explosion ?in the ?year ?1954 ?at the ?location ?of ?iPTF14hls ?(left), ?not ?seen ?in ?a ?later ?image ?taken ?in ?1993 ?(right). ?Supernovae ?are read more...

28 View, 0 Like, 0 dislike, 4 weeks ago

Artist?s impression of a SupernovaCredit: NASA/ESA/G. Bacon (STSci)iPTF14hls ?grew ?bright ?and ?dim ?again ?at ?least ?five ?times ?over ?two ?years. ?This ?behavior ?has ?never ?been seen ?in ?previous ?supernovae, ?which ?typically ?remain ?bright ?for approximately 100 days and ?then fade. Adapted from Arcavi et ?al. 2017, ?Nature. Credit: LCO/S. ?Wilkinson An image taken ?by ?the ?Palomar ?Observatory ?Sky Survey ?reveals ?a ?possible ?explosion ?in the ?year ?1954 ?at the ?location ?of ?iPTF14hls ?(left), ?not ?seen ?in ?a ?later ?image ?taken ?in ?1993 ?(right). ?Supernovae ?are read more...

24 View, 0 Like, 0 dislike, 4 weeks ago

A new study by scientists at NASA JPL has revealed that 55 Cancri e is not a lava planet after all, but actually has a thick, Earth-like atmosphere. The post Planet With Lava Oceans Also has an Atmosphere, Says New Study appeared first on Universe read more...

26 View, 0 Like, 0 dislike, 4 weeks ago

Asteroid 444584 (or 2006 UK), estimated to be about 300 meters wide, swooshed by Earth on Friday, November 17. The space rock missed our planet at 21:09 UTC at a safe distance of about 8.7 lunar distances (LD), what corresponds to 3.34 million kilometers.2006 UK is an Apollo-type potentially hazardous asteroid (PHA), which was discovered by Spacewatch on October 17, 2006. Spacewatch is an astronomical survey that specializes in the study of minor planets, including various types of asteroids and comets at Kitt Peak National Observatory near Tucson, Arizona.2006 UK has an absolute magnitude of read more...

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In a recent announcement, the STScI announced the first targets that the James Webb Space Telescope will be studying once its deployed The post When James Webb Finally Reaches Space, Here’s What it’ll be Hunting appeared first on Universe read more...

36 View, 0 Like, 0 dislike, 1 month ago

Perseus, the celestial hero, stands well up the eastern sky by mid-evening on November nights. When we gaze that way, we?re looking toward the outskirts of the Milky Way galaxy. Perseus harbors some amazing sights far beyond the Milky Way?s borders. That includes the Perseus cluster of galaxies, which is about 250 million light-years away. And astronomers recently discovered that the cluster is home to thousands of rogue star clusters ? clusters that aren?t attached to any galaxy. The star clusters are globulars, so named because each is shaped like a globe. A typical globular cluster packs read more...

25 View, 0 Like, 0 dislike, 1 month ago

When our Sun erupts with giant explosions ? such as bursts of radiation called solar flares ? we know they can affect space throughout the solar system as well as near Earth. But monitoring their effects requires having observatories in many places with many perspectives, much the way weather sensors all over Earth can help us monitor what?s happening with a terrestrial storm.By using multiple observatories, two recent studies show how solar flares exhibit pulses or oscillations in the amount of energy being sent out. Such research provides new insights on the origins of these massive solar read more...

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The location of asteroid 7 Iris as seen from Adelaide at local midnight (daylight savings time). Similar views will be seen from the rest of Australia at the equivalent local time. (click to embiggen).Asteroid 7 Iris is the 4th brightest asteroid, and one of the main belt asteroids. Normally at opposition it is around magnitude 7.8, around the limit of strong binoculars in suburban settings, but this opposition is a favourable one, with the asteroid currently magnitude 7.3, too dim for the unaided eye, but achivable with 10x50 or stronger binoculars and small telescopes under suburban read more...

30 View, 0 Like, 0 dislike, 1 month ago