Weekly Links

Down to Earth

One of the three original founders of the Planetary Society, Bruce Murray, passed away on August 29th. Murray was director of NASA’s Jet Propulsion Laboratory during the Viking and Voyager era. He started The Planetary Society with Lou Friedman and Carl Sagan in 1980. If you are a space enthusiast and you are not yet a member of the Planetary Society, you are missing out. Check out their website and weekly radio show.

From Wikipedia

Friedman, Murray, Sagan, and journalist Harry Ashmore

Last week three ISS crew members returned to Earth, ending Expedition 36. Chris Cassidy, Pavel Vinogradov, and Alexander Misurkin landed on September 11 in Kazakhstan. Next week a new crew will launch and dock on Wednesday, September 26.

Not Quite in Orbit

It seems cosmonaut Yuri Lonchakov – who was in space on Expedition 18 when I started working at JSC – has decided to retire from the space business. He had been in training to fly as commander of Expedition 44 in two years, which is what makes the departure somewhat confusing. However, as NASA Watch points out, he has been in the corps for a long time, with his first flight over a decade ago on STS-100. Everyone has to move on some time.

Last post I wrote about the second powered flight of SpaceShipTwo on September 5, and included some cool footage of the flight from the ground. Well, since then, Virgin Galactic released this view from onboard the spaceplane. Very cool (via Ubergizmo).

Last week on the 12th, SpaceX did a “static firing” (which means the rocket didn’t go anywhere) of the new Falcon 9 rocket on the pad at Vandenberg Air Force Base in California (here’s a Google Maps link). Unfortunately, they saw some anomalies and the test launch was delayed from the planned date of the 15th. According to Elon Musk, they hope to launch at the end of the month.

[blackbirdpie url=”https://twitter.com/elonmusk/status/379171375732105218″]

The new rocket is the Falcon 9 version 1.1. As you can see in the graphic below (from Wikipedia), version 1.1 is a significant visual upgrade from the existing Falcon 9. In addition to the payload faring and longer fuel tanks – making it taller – they are upgrading the Merlin engines that power the first stage. All future Falcon flights are supposed to transition to this rocket after the tests, including NASA cargo flights to ISS. So here’s hoping for a good launch in a week or two!

from Wikipedia

Falcon 1, Falcon 9, Falcon 9 v1.1, and Falcon Heavy

In Orbit

This morning at 10:50 AM Eastern, the Antares rocket carrying the first Cygnus cargo craft launched from Wallops Island, Virginia on the way to ISS.

The flight will bring Cygnus up to ISS for rendezvous this coming Sunday, September 22nd. My favorite part of the launch is this clever sign near the launch pad that made for a good photo op. Or maybe this bald eagle who had a front row seat is cooler?

As of this writing, the spacecraft has already done initial checkouts, with more ongoing.

In a nice double-whammy, there was also a big rocket launch from Florida early this morning. A United Launch Alliance Atlas V rocket launched an Air Force satellite before dawn at Cape Canaveral.

I was intrigued by this article at the Huffington Post about NASA’s radiation limits on active astronauts. Because of differing risks for cancer between genders, women have lower allowed limits of radiation, meaning they can’t fly as many days in space.

Around the Solar System

In somber news, mission managers of the Deep Impact/EPOXI mission announced earlier this month that they have been out of contact with the spacecraft for about a month. Flight controllers have indications that the onboard computer had a glitch and is now likely spinning out of control, which is why they can’t get commands uplinked to correct the problem – the communications antenna is not pointing towards home. The worry is that if it spins out of control for too long, the batteries won’t get charged from the solar arrays and the spacecraft will die.

EPOXI was launched as Deep Impact in 2005 and has had a very successful mission so far, with the rendezvous and impact of comet Tempel 1 and then years later the dramatic flyby of comet Hartley 2.

The biggest space news so far this month, at least that the public has noticed, was the official announcement by NASA that the Voyager 1 spacecraft has entered interstellar space. Some people were incorrectly reporting the announcement as “Voyager 1 has left the solar system” which makes me roll my eyes (see below). Phil Plait of Bad Astronomy covers this topic well.

from XKCD

September 18, 2013 10:20 pm

Leave a Reply