Nature Ilusions

Set moon in Moon
Photography by Michael Kenna (Michael Kenna). Overlay multiple frames for 2-3 hours (judging by the length of the beam).


Columns Eagle Castle
What highlights this castle star? Eagle Nebula, known to many, brightly lit simultaneously in different colors. Today's picture was made up of frames received in the light of three of these colors. The contours of the columns of dark dust nicely delineate the dense tower of star formation. Energetic radiation of young massive stars are energized gas, so that light, and dust, which with some degree of gas evaporates from the pillars of star formation. Many of these young stars shortly after a few million years to explode and thus in the nebula, from which they were formed, to return part of the substance. As a result of star formation in this area rise to an entire cluster, which is denoted M16.


Noctilucent clouds
Sometimes, when on earth the night, in the air day. In its daily rotation of the Earth eclipses the sun, and then at the horizon we see the sunset. While the sun had set for us on earth, the sun's rays are still illuminate the clouds in the sky. Under normal conditions, the horizon you can see the beautiful sunset and unusual noctilucent clouds, soaring so high that they can be seen long after it becomes quite dark. At today's picture shows a web of noctilucent clouds, enchanting glow which was observed after dusk. The clouds are depicted over a field near the German city of Potsdam. It is believed that noctilucent clouds are composed of small particles coated with ice crust. However, much remains unclear in the nature of these clouds. Among the satellites, which were sent to study these clouds - the Swedish satellite Odin satellite and NASA's "AIM" ( "Study of ice in the mesosphere). According to recent studies, at least some noctilucent clouds formed from water crystals, part of the exhaust from the space shuttle.


Moon illusion
Is the Moon appears larger when it is near the horizon? No - as shown above, the visible size of the moon does not depend on its position in the sky. Ironically, the reason or reasons for the well-known moon illusion of still being discussed. Two major explanations are based on the fact that the objects of the foreground give the impression that the moon is farther away, when it is visible near horizon. Historically, the more popular explanation is that the size of more distant objects appear to us more. In a more modern variant is also expected that the eyes have different focuses on near and distant objects. Be that as it may, the angular diameter of the Moon is always about 0.5 degrees. This sequence of images of the Moon was obtained in 2007, one of the exhibits also captured in the Gulf of Izmit, Turkey.