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Infrared Ring Around a Young Star.


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Image credit: Hubble
Hubble Mars Wallpaper
Aug 28, 2003 - Here's a new wallpaper of yesterday's beautiful picture of Mars taken by the Hubble Space Telescope. I can't believe the level of detail that an Earth-based telescope was able to take of Mars.

In order to set this as your computer wallpaper, click the link so the image loads in your screen. Then right-click and select "Set as Wallpaper". And then you'll have a big picture of Mars on your desktop.

Image credit: UKIRT
Earth-Based Telescopes Search for Martian Water

Aug 28, 2003 - Astronomers are searching for evidence of past water on Mars from the comfort of an observatory in Hawaii. They're using the United Kingdom Infrared telescope (UKIRT) to map the spectral signature given off of minerals on the Red Planet's surface. They're looking for minerals, such as hydrated clay, which would indicate the past presence of liquid water. NASA's two Mars Exploration Rovers will be searching for similar signs on Mars when they arrive in January 2004.

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Image credit: ESO
Infrared Ring Around a Young Star

Aug 28, 2003 - A new image taken by the European Southern Observatory's Very Large telescope (VLT) shows an Infrared Halo around a nascent star. The image also shows jets of gas emanating from the region and colliding with the surrounding cloud. Although these rings have been theorized before, this is the first time one has actually been seen. The dust in the surrounding cloud is collapsing under its own gravity and will eventually form a true star.

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Image credit: NASA
Satellites Measure Rising Seas

Aug 28, 2003 - The spectre of global warming and rising ocean levels have been a concern for many years, but NASA has some real numbers to help measure the situation. According to the Topex/Poseidon and Jason satellites, sea levels have been rising an average of 2.8 millimetres a year since observations began in 1992. Whether rising sea levels are caused by human impact or a natural cycle still isn't clear, but the impact is already being felt in coastal communities around the world with water inundating low-level areas and an increased rate of beach erosion.

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