Cassini | Fireball Into Saturn

The astronomy community is active with posts and anticipation of the end of the Cassini Mission to Saturn early in the morning of 15 Sep 2017. This post serves as a brief reminder that you can witness the ending moments live by going online or via the NASA channel on cable. Set your calendar or clock.

Time to show up for the broadcast is 7 am Eastern Time, 6 CT, 5 MT, or 4 PT. I will leave the time calculation to others who live across the oceans.

Online sources include YouTube, NASA-TV, UStream, and Facebook. The table in the link includes links to each of those. You get to choose.

Consult your cable provider to see if they provide the NASA-TV channel.

For a huge number of links to current and past information about the Cassini Mission, please go to the Media Kit provided for reporters by NASA-JPL. It is loaded with terrific sources and deserves to be bookmarked for future reference beyond the end of this mission.


Cassini-Huygens | An Amazing Journey

The Cassini-Huygens mission has delivered an enormous amount of new scientific findings about Saturn, its rings, and the surrounding many moons. Design work on the mission started in the 1980s as a joint effort by NASA, the European Space Agency ESA, and the Italian space agency Agenzia Spaziale Italiana ASI. Launch was on 15 October 1997. It reached Saturn orbit 1 July 2004 after flybys of Venus, Earth, and Jupiter to adjust the orbit speed and direction via gravity assist. My previous posts about many of the findings by Cassini and Huygens are listed here.

On 15 September 2017, the Cassini spacecraft ends the mission by plunging into the atmosphere of Saturn. It will not be left in orbit for fear of collision with a Saturnian moon and possible contamination of the moon. Future missions to the Saturn system need to be free of any potential contaminants from Earth.

Some scientists and mission specialists have worked on Cassini for their entire careers. This video highlights a few of them and how they feel about the legacy of the mission. I congratulate them all for a job well done. I will be watching NASA-TV at 6 am CDT September 15 to see the final moments of the plunge into Saturn. I hope you will be watching, too.

Solar Eclipse | Viewed From Moon

NASA’s Lunar Reconnaissance Orbiter LRO circles the Moon in a polar orbit. The LRO instruments return data on the lunar surface. Temperature maps, a mapping grid, high-resolution images cover the entire surface. The polar regions of the Moon are of particular interest. Water may exist in the permanently shadowed craters at the pole. These water resources may assist future returns to the Moon by humans and even exploration farther into the solar system. Previous posts about LRO are found here.

NASA | Lunar Reconnaissance Orbiter

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Solar Eclipse | NASA-TV Coverage

NASA plans thorough coverage of the 21 August solar eclipse according to this announcement. Highlights will be broadcast live from unique locations coast-to-coast, aircraft, spacecraft, and the International Space Station. So, if you are unable to put yourself in the centerline, you can still see this life-changing event. Streaming can be viewed at this page.

In the announcement linked above, there is a listing of NASA app sites, social media links, NASA-TV feeds, and streaming links. Coverage begins at noon EDT with pre-eclipse programming. The main event begins at 1 pm and covers the eclipse from Oregon to South Carolina.

APOD | Miloslav Druckmüller (Brno U. of Tech.), Martin Dietzel, Peter Aniol, Vojtech Rušin | 2008

JUNO | Close Flyby of Jupiter | 19 May 2017

The JUNO spacecraft continues its mission of very close flybys of the cloud tops of Jupiter. The most recent pass was on 19 May 2017. Images downloaded from the JunoCam instrument were made available to the public. I downloaded two sets in red, green, and blue filtered grayscale. Each set was combined into color versions using Photoshop and techniques described in a previous post. The colors are my interpretation and not necessarily real.

Saturn | Cassini Mission | Grand Finale

Launched 15 October 1997, the Cassini Mission is in its 20th year. It reached Saturn and entered orbit on 1 July 2004. Details of the mission can be read at this Wikipedia summary. This post is mostly about the maneuvers by Cassini to change its orbit and make 22 close encounters with Saturn in what is called the Grand Finale. End of mission is scheduled for 15 Sep 2017 when the spacecraft plunges into the atmosphere of Saturn ending a long and brilliant exploration of the famous ringed planet, its rings, and 62 moons.

Clean Room Workers Ready Spacecraft | NASA | 1996

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