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Get ready for a second blast DR EMILY BALDWIN ASTRONOMY NOW Posted: 04 August 2010 
The first of two coronal mass ejections blasted out from the Sun at the weekend arrived in Earth's neighbourhood last night, lighting up the skies across Europe and North America. A second blast is expected to arrive tonight.  Almost the entire Earth-facing side of the Sun erupted on 1 August, blasting out two coronal mass ejections. The different colours in this extreme ultraviolet snapshot from the Solar Dynamics Observatory represents different gas temperatures ranging from 1 to 2 million degrees K. Image: NASA/SDO.
Last night's activity rated G2 on the NOAA Space Weather Scale for Geomagnetic Storms, translating as a moderate storm on a scale that tops out at grade five. The storm struck the Earth's magnetic field at 1740 UT and persisted for some 12 hours.  These images taken by the STEREO Ahead satellite from 3:47 to 15:47 UT, show the movement of the CME cloud, on the right of the discs, as it expands toward Earth. Image: NASA/STEREO.
A second bout of geomagnetic activity is forecast for this evening; according to spaceweather.com, there is a 35 percent chance of major geomagnetic storms. You can see some of the beautiful auroral displays from last night's storm in spaceweather.com's aurora gallery. Read yesterday's report, Solar blast heads for Earth, here. |
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The Planets
Hubble Reborn
3D Universe
 This special publication features the photography of British astro-imager Nik Szymanek and covers a range of photographic methods from basic to advanced. Beautiful pictures of the night sky can be obtained with a simple camera and tripod before tackling more difficult projects, such as guided astrophotography through the telescope and CCD imaging. U.K. STOREE.U. STOREU.S. & WORLDWIDE STORE Starry Night  Explore the Universe with these new versions of the award-winning Starry Night Software. Available now from the Astronomy Now Store.U.K. STOREE.U. STOREU.S. & WORLDWIDE STOREExploring Mars  Astronomy Now is pleased to announce the publication of Exploring Mars. The very best images of Mars taken by orbiting spacecraft and NASA's Spirit and Opportunity rovers fill up the 98 glossy pages of this special edition!U.K. STOREE.U. STOREU.S. & WORLDWIDE STOREMars rover poster  This new poster features some of the best pictures from NASA's amazing Mars Exploration Rovers Spirit and Opportunity.U.K. STOREE.U. STOREU.S. & WORLDWIDE STORE |
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From tiny Mercury to distant Neptune and Pluto, The Planets profiles each of the Solar System's members in depth, featuring the latest imagery from space missions. The tallest mountains, the deepest canyons, the strongest winds, raging atmospheric storms, terrain studded with craters and vast worlds of ice are just some of the sights you'll see on this 100-page tour of the planets. 
Hubble Reborn takes the reader on a journey through the Universe with spectacular full-colour pictures of galaxies, nebulae, planets and stars as seen through Hubble's eyes, along the way telling the dramatic story of the space telescope, including interviews with key scientists and astronauts. 
Witness the most awesome sights of the Universe as they were meant to be seen in this 100-page extravaganza of planets, galaxies and star-scapes, all in 3D!