Tag Archives: picture

Incredible picture of Saturn taken by the Cassini probe (shorties).

This amazing picture was taken by the Cassini probe, as it looked back on the eclipsing Sun. If you look carefully, you can see Earth just above the bright rings.

This picture was taken during Saturn’s ‘night time’, when the planet is partly lit by light reflected from its own majestic ring system.

Photo by NASA.

Spectacular photos from the solar eclipse in 2011

Photo by Rhys Jones.

Photo by Rhys Jones.

The first solar eclipse of 2011 was indeed a spectacular one; even though it was only a partial eclipse, the 4th of January was a day to remember – for skygazers and not only.

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It was visible over the majority of Europe, as well as northwestern Asia, but it reached it’s most spectacular moment in Sweden, when the axis of the Moon’s shadow passed just 510 km above the Earth’s surface. This solar eclipse was the first one of four predicted partial eclipses to take place in 2011, in June 1, July 1 and November 25.

A truly fascinating picture of the solar eclipse also catches a glimpse of the ISS

 

Hubble shows 2 galaxies that are just losing it

hubble-ram-pressureRam pressure is the pressure exerted on a body when it passes through a fluid medium; this causes a drag force that is exerted on the body. The same pressure occurs when a galaxy (body) is moving through an intergalactic gas (fluid), and in this case, the ram pressure can sweep a significant part of the intergalactic gas from the galaxy. The spiral galaxy NGC 4522 is located a bit more than 60 light years away from our planet and it’s a great example of a spiral galaxy being stripped of its gas.

The galaxy is part of the Virgo galaxy cluster and it moves at over 10.000.000 km/h. This is just an image, but you can almost see the galaxy swirling, highlighting its dramatic state, as the halo-like gas is being forced out of it. This was caused by a number of newly formed star clusters.

The image also shows some more subtle effects of the ram pressure, such as the curved (convex) appearance of the disk and understanding it is really important because it helps researchers understand the mechanism that leads to the birth of galaxies better, and also provide important clues on how the rate of star formation is being ‘controlled’ by galaxies.