Hubble Spins a Web Into a Giant Red Spider Nebula by NASA’s Marshall Space Flight Center Via Flickr: Huge waves are sculpted in this two-lobed nebula called the Red Spider Nebula, located some 3,000 light-years away in the constellation of Sagittarius. This warm planetary nebula harbors one of the hottest stars known and its powerful stellar winds generate waves 100 billion kilometers (62.4 billion miles) high. The waves are caused by supersonic shocks, formed when the local gas is compressed and heated in front of the rapidly expanding lobes. The atoms caught in the shock emit the spectacular radiation seen in this image.
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Just a day after the arrival of ExoMars Trace Gas Orbiter and its lander Schiaparelli, Mars Reconnaissance Orbiter has taken a photo of the landing site with its Context Camera, and things do not look good. ESA posted the image and an analysis on their website today.
On October 15, standing near the summit of Hawaii’s
and looking away from a gorgeous sunset produced this
magnificent snapshot of a Full Moon rising within
the volcanic mountain’s shadow.
An alignment across the
Solar System is captured in the
stunning scene and seeming contradiction of bright Moon in dark shadow.
The triangular appearance of a
by a mountain’s irregular profile is normal.
It’s created by the perspective
of the distant mountaintop view through the dense atmosphere.
Rising as the Sun sets, the antisolar point or
the point opposite the Sun is close to the perspective’s vanishing
point near the mountain shadow’s peak.
But extending in the antisolar direction, Earth’s conical shadow is
only a few lunar diameters
wide at the distance of the Moon.
Full Hunters Moon is still reflecting sunlight,
seen through the mountain’s atmospheric shadow but
found too far from the antisolar point and the Earth’s extended shadow
to be eclipsed.
Fair warning of some pseudoscience floating around there! I noticed a lot of articles likethese ones talking about how rare seeing hexagonal cloud patterns are and some go as far to blame the clouds for disappearances in the bermuda triangle. THIS IS BAD REPORTING! What you see in the pictures is very well known open cell convection (or here’s a powerpoint).
This does not explain and is not definitively connected to the claimed wind speed observations, and I’m not seeing any publications on the matter.
This occurs when you have a large temperature difference of cold air moving over warmer ocean water. We see it a lot over the Pacific, but you can find it in a lot of places during winter. Feel free to google “open cell convection” and look at more pictures of the cool hexagonal clouds, though!
This adventure is made possible by generations of searchers strictly adherent to a simple set of rules. Test ideas by experiments and observations. Build on those ideas that pass the test. Reject the ones that fail. Follow the evidence wherever it leads, and question everything. Accept these terms, and the cosmos is yours.
Scientists scrambling to understand current climate and pollution trends are peering centuries into the past, long before the dawn of the industrial age. Late this past summer researchers and engineers from France, Italy and Russia extracted three ice cores from France’s Col du Dôme Glacier in a race to preserve valuable information about climate change before rising temperatures wash it away.
There is ample reason for concern. According to NASA’s September 2016 climate data, the previous 10 months have been the hottest on record for each of those months out of the last 136 years—since modern weather recording started. In fact, for a few days in July 2015, the Col du Dôme’s surface temperature rose above freezing, causing alarm among weather scientists.
kdo by to byl řekl, že mi přečtení 250ti stran marťana zvedne náladu ve smyslu, co jsem psala ráno, že jsem stresovaná.
nějak jsem si z toho odnesla, že to nemám tak hrozný (zvlášť pokud nám čas číst, říkáte si, ale nebojte, to bylo místo toho abych dávala pozor na přednášce. na pěti přednáškách) a tak nějak mi zůstalo v hlavě