EarthSky News - Apr 30 - Top Stories This Week

April 30 Top Stories This Week by:

Help EarthSky keep going Please help us help you keep looking up. Donate today. Prefer PayPal or to send a check? Go here. We're in the last week of our once-yearly fund-raiser. We need you. This asteroid and comet look similar Nature is so cool! Cassini dives between Saturn and its rings This spacecraft made the 1st-ever dive through the gap between Saturn's outer atmosphere and inner rings on Wednesday. Why cats can't resist (even a phony) box Animal behavior expert explains what draws Fluffy to the #CatSquare. Landslides on dwarf planet Ceres A recent study reinforces the idea that Ceres has a lot of water ice. World Penguin Day We celebrated penguins on Tuesday. World Penguin Day is timed with their annual march to the sea. Tonight … Find Hercules between 2 bright stars The brilliant stars Arcturus and Vega help you find the constellation Hercules and its famous Keystone asterism. Oops!  My mistake. I apologize. Hi, y'all, it's Deborah. I said in Saturday's EarthSky News that we went between Venus and the sun March 25. We didn't!  Venus went between us and the sun March 25. Sorry for the confusion, and thanks to the many alert readers who caught it!

EarthSky Lunar Calendars are on sale 50% OFF A unique and beautiful poster-sized calendar. Keep up with all phases of the moon every night of the year. Only about 100 left in stock, get them while you can!

Tonight … Find Hercules between 2 bright stars The brilliant stars Arcturus and Vega help you find the constellation Hercules and its famous Keystone asterism.

Io's shadow on Jupiter Scott MacNeill in Providence, Rhode Island caught Jupiter's closest moon, Io, casting its shadow on Jupiter's cloud tops. Another moon, Europa, is to the left. Submit your photo to EarthSky here!

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