1. Space News Update - April 9, 2012 - In the News Story 1: Story 1: SDO and STEREO Spot Something New On the Sun Story 2: Story 2: Mystery of Saturn's Walnut Moon Cracked? Story 3: Story 3: Proposed Satellite Would Beam Solar Power to Earth Departments The Night Sky ISS Sighting Opportunities NASA-TV Highlights Space Calendar Food for Thought Space Image of the Week

2. SDO and STEREO Spot Something New On the Sun

3. Mystery of Saturn's Walnut Moon Cracked?

4. Proposed Satellite Would Beam Solar Power to Earth

5. The Night Sky Monday, April 9 · The Big Dipper, high in the northeast, dumps water into the dim Little Dipper during evening at this time of year. Tuesday, April 10 · The bright star high to the upper right of Venus these evenings is Capella, the Goat Star. It's the same yellow-white color, and thus the same temperature, as the Sun. Wednesday, April 11 · With the Moon gone from the evening sky, it's deep-sky observing time again. Telescope users are familiar with the "Leo Trio" of galaxies (M65, M66, and NGC 3628) by the little chair asterism in the back leg of Leo. Can you detect M65 and M66 with binoculars? See Gary Seronik's Binocular Highlight column and map in the April Sky & Telescope, page 45. Thursday, April 12 · Also near the back leg of Leo is the asteroid 5 Astraea, about magnitude 9.6. Find it, along with 6 Hebe and 8 Flora also in Leo, using the charts in the April Sky & Telescope, page 52. Friday, April 13 · Summer preview: stay up till 11 and look northeast, and you'll get a preview of bright Vega, the "Summer Star" in little Lyra, climbing into good view. · Last-quarter Moon (exact at 6:50 a.m. on this date EDT).

6. ISS Sighting Opportunities Sighting information for other cities can be found at NASA’s Satellite Sighting InformationSatellite Sighting Information For Denver: SATELLITELOCALDURATION MAX ELEV APPROACHDEPARTURE DATE/TIME(MIN)(DEG)(DEG-DIR) ISSMon Apr 09/08:11 PM41710 above S13 above E ISSMon Apr 09/09:46 PM22610 above WSW26 above W ISSTue Apr 10/08:49 PM58210 above SW18 above NE ISSTue Apr 10/10:27 PM< 11010 above WNW ISSWed Apr 11/07:55 PM43526 above S10 above ENE ISSWed Apr 11/09:32 PM22625 above NW19 above NNE ISSThu Apr 12/08:34 PM64710 above WSW11 above NE ISSThu Apr 12/10:13 PM11312 above NNW13 above N ISSFri Apr 13/09:17 PM21817 above NNW11 above NNE

7. NASA-TV Highlights April 11, Wednesday 10:15 a.m. - ISS Expedition 30 Crew News Conference - JSC (All Channels) April 13, Friday 11:15 a.m. - ISS Expedition 30 In-Flight Event with NPR’s “Science Friday” Program - JSC (Public and Media Channels) Watch NASA TV on the Net by going to NASA website.NASA website

8. Space Calendar · Apr 09 - Comet 141P/Machholz 2-D Closest Approach To Earth (4.009 AU) · Apr 09 - Asteroid 4557 Mika Occults HIP 107556 (2.9 Magnitude Star) · Apr 09 - Asteroid 2829 Bobhope Closest Approach To Earth (2.195 AU) · Apr 10 - Comet 58P/Jackson-Neujmin Perihelion (1.374 AU) · Apr 10 - Asteroid 2012 GD Near-Earth Flyby (0.024 AU) · Apr 10 - Asteroid 2004 FG11 Near-Earth Flyby (0.057 AU) · Apr 10 - Asteroid 4116 Elachi Closest Approach To Earth (0.810 AU) · Apr 10 - Asteroid 188534 Mauna Kea Closest Approach To Earth (1.941 AU) · Apr 10 - Asteroid 3325 TARDIS Closest Approach To Earth (2.193 AU) · Apr 11 - Cassini, Orbital Trim Maneuver #316 (OTM-316) · Apr 11 - Asteroid 7934 Sinatra Closest Approach To Earth (1.388 AU) · Apr 11-20 - Globe at Night · Apr 12 - Kwangmyongsong 3 Unha 3 Launch (North Korea) · Apr 12 - Comet 163P/NEAT Perihelion (2.057 AU) · Apr 12 - Comet 246P/NEAT Closest Approach To Earth (2.310 AU) · Apr 12 - Asteroid 1638 Ruanda Occults HIP 58002 (6.3 Magnitude Star) · Apr 12 - Asteroid 2004 RQ252 Near-Earth Flyby (0.044 AU) · Apr 12 - Asteroid 2012 EO10 Near-Earth Flyby (0.080 AU) · Apr 12 - Asteroid 5703 Hevelius Closest Approach To Earth (1.972 AU) · Apr 12 - Yuri's Night: World Space Party · Apr 13 - Comet C/2011 L6 (Boattini) Closest Approach To Earth (6.398 AU) · Apr 13 - Asteroid 2012 FO35 Near-Earth Flyby (0.057 AU) · Apr 13 - Asteroid 4226 Damiaan Closest Approach To Earth (2.393 AU) · Apr 13 - Asteroid 9950 ESA Closest Approach To Earth (2.574 AU) JPL Space Calendar

9. Food for Thought How Many Moons Does Earth Have?

10. Space Image of the Week