Tumblr permet à des dizaines de millions de personnes de partager et suivre les sujets qui les passionnent.Inscrivez-vous et découvrez encore plus de blogs
Super moon returns to night skies on May 5, 2012
May 1, 2012 – SPACE - Skywatchers take note: The biggest full moon of the year is due to arrive this weekend. The moon will officially become full Saturday (May 5) at 11:35 p.m. EDT. And because this month’s full moon coincides with the moon’s perigee — its closest approach to Earth — it will also be the year’s biggest. The moon will swing in 221,802 miles (356,955 kilometers) from our planet, offering skywatchers a spectacular view of an extra-big, extra-bright moon, nicknamed a super moon. And not only does the moon’s perigee coincide with full moon this month, but this perigee will be the nearest to Earth of any this year, as the distance of the moon’s close approach varies by about 3 percent, according to meteorologist Joe Rao, SPACE.com’s skywatching columnist. This happens because the moon’s orbit is not perfectly circular. This month’s full moon is due to be about 16 percent brighter than average. In contrast, later this year on Nov. 28, the full moon will coincide with apogee, the moon’s farthest approach, offering a particularly small and dim full moon. Though the unusual appearance of this month’s full moon may be surprising to some, there’s no reason for alarm, scientists warn. The slight distance difference isn’t enough to cause any earthquakes or extreme tidal effects, experts say. However, the normal tides around the world will be particularly high and low. At perigee, the moon will exert about 42 percent more tidal force than it will during its next apogee two weeks later, Rao said. The last supermoon occurred in March 2011. -SPACE
Get ready sky watchers!
Six planets and the waning crescent moon arrayed in the dawn sky on Saturday April 30, as seen from Los Angeles, California.
CREDIT: Starry Night Software
For the next few weeks, if you get up in the morning, you’ll be able to see all the planets bar Saturn arrayed along the ecliptic.
For the last few months, the planets (almost all) have been shy and have been hiding behind our Sol, but this week they’ve decided to show off.
Mercury, Venus, Mars and Jupiter are visible for the next few weeks and Uranus and Neptune too if you’ve got some binoculars or/and a telescope.
So get looking!