1. Space News Update - July 20, 2018 - In the News Departments Story 1:
X-ray Data Suggests That a Star Is Devouring a Planet
Story 2:
Where to Search for Signs of Life on Titan
Story 3: "Storm Chasers" on Mars Searching for Dusty Secrets
Departments
The Night Sky
ISS Sighting Opportunities
NASA-TV Highlights
Space Calendar
Food for Thought
Space Image of the Week

2. X-ray Data Suggests That a Star Is Devouring a Planet
In this computer graphic, NASA's Voyager 1 probe, moving toward upper left, nears the edge of the sun's influence, flying through a region of space dominated by a "magnetic highway" that helps mediate the flow of particles into and out of the solar system. The region includes particles from the sun's southern hemisphere that have been forced northward by the pressure of the interstellar wind. Voyager 1 is expected to cross the boundary into interstellar space sometime within the next few years if not sooner. (Credit: NASA)

3. Where to Search for Signs of Life on Titan

4. "Storm Chasers" on Mars Searching for Dusty Secrets

5. The Night Sky Sky & Telescope Friday, July 20
• The waxing gibbous Moon shines over Jupiter this evening, as shown here. Left of Jupiter by just 2° is the wide binocular double star Alpha Librae, magnitudes 2.8 and 5.1.
The Moon is 1.3 light-seconds distant from us, and Jupiter is 44 light-minutes in its background. The two stars of Alpha Librae are 77 light-years behind them.
Saturday, July 21
• Now Jupiter and Alpha Librae shine lower right of the Moon. To the Moon's lower left is Antares, with other stars of upper Scorpius scattered around.
Sunday, July 22
• The Moon shines over Antares and the Head of Scorpius this evening. Bright Vega is nearing the zenith from the east, and Arcturus is descending the western side of the sky.
Monday, July 23
• Saturn shines lower left of the gibbous Moon this evening, as shown here. The Moon and Saturn form a not-quite-equilateral triangle with the Cat's Eyes, an unequal pair of stars in the tail of Scorpius far below. This triangle rises higher and rotates clockwise as night grows late.
The Cat's Eyes are canted at an angle; the cat is tilting his head and winking. A line through them points west (right) by nearly a fist-width toward Mu Scorpii — a much tighter pair known as the Little Cat's Eyes. Can you resolve Mu without using binoculars? It's hard!
Tuesday, July 24
• The Moon shines with Saturn tonight, as shown here. Saturn, the most distant bright planet, is 3,420 times farther away and 35 times as wide.
Sky & Telescope

6. ISS Sighting Opportunities
ISS For Denver:
Date
Visible
Max Height
Appears
Disappears
Fri Jul 20, 00:23 AM
3 min
12°
10° above NW
10° above NNE
Fri Jul 20, 2:01 AM
< 1 min
10°
10° above NNW
Fri Jul 20, 3:37 AM
6 min
29°
10° above E
Fri Jul 20, 5:13 AM
5 min
32°
11° above WNW
11° above SSE
Fri Jul 20, 9:52 PM
71°
10° above WSW
10° above NE
Fri Jul 20, 11:30 PM
4 min
15°
11° above NW
11° above NNE
Sat Jul 21, 2:45 AM
19°
11° above NNW
10° above ENE
Sat Jul 21, 4:21 AM
66°
10° above WNW
10° above SE
Sat Jul 21, 9:00 PM
56°
10° above SW
11° above ENE
Sat Jul 21, 10:37 PM
21°
Sun Jul 22, 1:53 AM
14°
Sun Jul 22, 3:29 AM
61°
10° above ESE
Sun Jul 22, 5:06 AM
13°
10° above W
10° above SSW
Sun Jul 22, 9:45 PM
31°
11° above W
12° above NE
Sun Jul 22, 11:26 PM
11°
11° above N
10° above N
Mon Jul 23, 1:03 AM
Mon Jul 23, 8:52 PM
55°
Mon Jul 23, 10:33 PM
1 min
13° above N
Tue Jul 24, 00:10 AM
Tue Jul 24, 9:40 PM
2 min
18°
18° above NNW
Tue Jul 24, 11:18 PM
Sighting information for other cities can be found at NASA’s Satellite Sighting Information

7. NASA-TV Highlights (all times Eastern Time Zone)
MAVEN Launch November 18, 2013
NASA
MAVEN Launch November 18, 2013
NASA
MAVEN Launch November 18, 2013
NASA
NASA-TV Highlights
(all times Eastern Time Zone)
Friday, July 20 
1 p.m., Pre-launch Science Briefing for Parker Solar Probe (all channels)
2 p.m., NASA Television Special - Apollo 11: Moonwalk One (1970) (NTV-1 (Public))
3:30 p.m., ISS Expedition 56 In-Flight Event for the European Space Agency with the KRAFTWERK Open Air Concert in Stuttgart, Germany and Flight Engineer Alexander Gerst of ESA (starts at 3:50 p.m.) (NTV-3 (Media))
4 p.m., NASA Television Special - Apollo 11: Lunar Module Powered Descent & Landing on Moon - July 20, 1969 (NTV-1 (Public))
4:30 p.m., 10 p.m., NASA Television Special - Apollo 11: (all channels)
5 p.m., 9 p.m., Replay of the Pre-launch Science Briefing for Parker Solar Probe (all channels)
6 p.m., NASA Television Special - Apollo 11: Crew Interview Commemoration of the First Lunar Landing - Neil Armstrong; Buzz Aldrin; Michael Collins (all channels)
7 p.m., NASA Television Special - Apollo 11: Moonwalk One (1970) (all channels)
Saturday, July 21 
8 a.m., 3 p.m., 7:30 p.m., 11 p.m., Replay of the Pre-launch Science Briefing for Parker Solar Probe (all channels)
9 a.m., NASA Television Special - Apollo 11: Prelaunch Press Conference/EVA Training (all channels)
11 a.m., 9 p.m., NASA Television Special - Apollo 11: Moonwalk One (1970) (all channels)
1:30 p.m., NASA Television Special - Apollo 11: TV of LM checkout, Earth Views, and Lunar Surface Observations; Lunar View and Crew Activity (all channels)
4 p.m., NASA Television Special - Apollo 11: Crew Interview Commemoration of the First Lunar Landing - Neil Armstrong; Buzz Aldrin; Michael Collins (all channels)
5 p.m., NASA Television Special - Apollo 11: Post Flight Press Conference (all channels)
8:30 p.m., NASA Television Special - Apollo 11: (all channels)
Sunday, July 22 -9 a.m.,
Replay of the Pre-launch Science Briefing for Parker Solar Probe (all channels)
Tue May 30, 9:16 PM
1 min
14°
14° above N
10° above NNE
Tue May 30, 10:53 PM
< 1 min
10°
10° above N
Wed May 31, 00:30 AM
18°
18° above N
Wed May 31, 10:01 PM
Wed May 31, 11:38 PM
2 min
15°
14° above NE
Thu Jun 1, 9:09 PM
11°
11° above N
Thu Jun 1, 10:45 PM
12°
12° above N
10° above NE
Fri Jun 2, 00:20 AM
17°
10° above NW
17° above NNW
Watch NASA TV online by going to the NASA website

8. Space Calendar JPL Space Calendar
Jul 20 - Asteroid Adamwest Closest Approach To Earth (1.132 AU)
Jul 20 - Alberto Santos-Dumont's 145th Birthday (1873)
Jul 21 - Apollo Asteroid 2018 NE1 Near-Earth Flyby (0.026 AU)
Jul 21 - [Jul 16] Apollo Asteroid 2018 NF4 Near-Earth Flyby (0.048 AU)
Jul 21 - Apollo Asteroid 2012 BV26 Near-Earth Flyby (0.053 AU)
Jul 21 - Amor Asteroid 2018 NB Near-Earth Flyby (0.085 AU)
Jul 21 - Amor Asteroid 2018 LU15 Near-Earth Flyby (0.099 AU)
Jul 21 - Atira Asteroid (2005 TG45) Closest Approach To Earth (0.236 AU)
Jul 21 - Asteroid Dancingangel Closest Approach To Earth (0.923 AU)
Jul 21 - Asteroid 588 Achilles (Jupiter Trojan) Closest Approach To Earth (4.850 AU)
Jul th Anniversary (1998), Galileo, Europa 16 Flyby
Jul th Anniversary (1973), Mars 4 Launch (USSR Mars Mission)
Jul 22 - [Jul 19] Telstar 19V Falcon 9 Launch
Jul 22 - Comet 267P/LONEOS Perihelion (1.241 AU)
Jul 22 - Comet 366P/Spacewatch Perihelion (2.278 AU)
Jul 22 - [Jul 20] Apollo Asteroid 2018 OL Near-Earth Flyby (0.029 AU)
Jul 22 - Asteroid 3904 Honda Closest Approach To Earth (1.731 AU)
Jul 22 - Asteroid 2224 Tucson Closest Approach To Earth (1.738 AU)
Jul  9th International Conference on Mars, Pasadena, California
Jul  Conference: Science & Evolution of Gemini Observatory, San Franciso, California
Jul  81st Annual Meeting of The Meteoritical Society, Moscow, Russia
Jul 23 - Comet 349P/Lemmon Closest Approach To Earth (2.097 AU)
Jul 23 - Apollo Asteroid 2018 ME5 Near-Earth Flyby (0.097 AU)
Jul 23 - Asteroid Payton Closest Approach To Earth (1.471 AU)
Jul 23 - Apollo Asteroid 2135 Aristaeus Closest Approach To Earth (1.507 AU)
Jul 23 - Asteroid 5249 Giza Closest Approach To Earth (2.368 AU)
Jul th Anniversary (1958), Thor-Able Launch (Carried Wickie the Mouse)
Jul 23 - Vera Rubin's 90th Birthday (1928)
JPL Space Calendar

9. Did a Rogue Star ChangetThe Makeup of Our Solar System?
Food for Thought
Did a Rogue Star ChangetThe Makeup of Our Solar System?

10. Space Image of the Week
Dark Slope Streaks Split on Mars  Image Credit: HiRISE, MRO, LPL (U. Arizona), NASA