Noteworthy Quote: Habitable Worlds

"The bottom line of this is something like one in five of all stars may have an analog to Earth. That's a lot of habitable worlds, and, indeed, the number of Earths in our own galaxy might be on the order of 50 billion."

-Statement by Seth Shostak, senior astronomer at California's SETI Institute, at the NASA/Library of Congress' two-day symposium, "Preparing For Discovery." 

Traffic Jam Over Mars

With NASA's Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft arriving at Mars earlier this week, and now India's Mars Orbiter Mission (MOM) also arriving today, things are getting crowded in the Martian skies.

MAVEN's main focus will be the planet's upper atmosphere to determine what happened to the Red Planet's former atmosphere - did it blow away or submerge itself into the planet's surface?  India's MOM main mission was simply to arrive at Mars and thereby prove India's ability to accomplish interplanetary travel.  Mission accomplished!  Now that the probe is in orbit, it can begin a number of experiments to better understand the planet beneath it.

The two spacecraft join others already in orbit and still busy conducting observations, including NASA's Mars Odyssey launched in 2001 and the Mars Reconnaissance Orbiter launched in 2005, as well as the European Space Agency's Mars Express launched in 2003.  Other dead spacecraft may still be circling the Red Planet, such as NASA's Mars Global Surveyor, which stopped communicating in 2007.  Let's hope everyone can keep to their own orbit without colliding. 

Does the Moon Ruin the Night Sky?

Did NASA's Administrator Charles Bolden make the following statements?

-- The moon is moon as “useless” and “a barren eyesore."
-- The moon “all but ruins the night sky for me.”
-- Every dollar spent on lunar exploration might as well have been “thrown straight in the trash.”

No, but those are the quotes in the ever-funny The Onion news story from which this was taken.  A little bit of humor these days never hurts.  And since my taste tend more towards Mars, I am not going to stand up for the moon.  

Ray Bradbury Online Auction

You have only a few days to bid on articles from science fiction writer Ray Bradbury's past.  Bradbury, who passed away in 2012, left behind quite a few items, some of which were donated by his family to local institutions.  However, other items, such as his Hugo Award and artwork used on the covers of his books, were put on the auction block.  Visit this link if you would like to learn more.  The auction ends on Thursday, so be quick about it.

Great Image: Massive Black Hole

The above image is an artist's impression of a huge black hole five times larger than the black hole at the center of the Milky Way sitting in the middle of a galaxy only a fraction of the size of our galaxy.  Talk about a night sky! 

Here is NASA's story: 

Astronomers using data from NASA’s Hubble Space Telescope and ground observation have found an unlikely object in an improbable place -- a monster black hole lurking inside one of the tiniest galaxies ever known.

The black hole is five times the mass of the one at the center of our Milky Way galaxy. It is inside one of the densest galaxies known to date -- the M60-UCD1 dwarf galaxy that crams 140 million stars within a diameter of about 300 light-years, which is only 1/500th of our galaxy’s diameter.

If you lived inside this dwarf galaxy, the night sky would dazzle with at least 1 million stars visible to the naked eye. Our nighttime sky as seen from Earth’s surface shows 4,000 stars.

The finding implies there are many other compact galaxies in the universe that contain supermassive black holes. The observation also suggests dwarf galaxies may actually be the stripped remnants of larger galaxies that were torn apart during collisions with other galaxies rather than small islands of stars born in isolation.

“We don’t know of any other way you could make a black hole so big in an object this small,” said University of Utah astronomer Anil Seth, lead author of an international study of the dwarf galaxy published in Thursday’s issue of the journal Nature.

One explanation is that M60-UCD1 was once a large galaxy containing 10 billion stars, but then it passed very close to the center of an even larger galaxy, M60, and in that process all the stars and dark matter in the outer part of the galaxy were torn away and became part of M60.

The team believes that M60-UCD1 may eventually be pulled to fully merge with M60, which has its own monster black hole that weighs a whopping 4.5 billion solar masses, or more than 1,000 times bigger than the black hole in our galaxy. When that happens, the black holes in both galaxies also likely will merge. Both galaxies are 50 million light-years away.

Image Credit:  NASA, ESA, STScI-PRC14-41a\

SpaceX Becomes More Integral to U.S. Space Missions

As SpaceX's Dragon heads back to the International Space Station today with necessary supplies, such as spacesuit batteries and 3D printers, the company is slated to take a much larger role in the U.S. space program.  NASA has named Boeing and SpaceX as the two suppliers of spacecraft to take U.S astronauts in to low-Earth orbit.  Earlier last week NASA announced its selection of the two companies for the Commercial Crew Transportation Capability contracts, stating:

 ...today we are one step closer to launching our astronauts from U.S. soil on American spacecraft and ending the nation’s sole reliance on Russia by 2017. Turning over low-Earth orbit transportation to private industry will also allow NASA to focus on an even more ambitious mission – sending humans to Mars.

Boeing received the larger contract of $4.2 billion, but SpaceX is also getting $2.6 billion.  Yes, it is playing second fiddle to Boeing, but it is now in the big leagues and I can only see it getting better for SpaceX and hopefully other small companies in the future.  SpaceX announced:

SpaceX is deeply honored by the trust NASA has placed in us, and we welcome today’s decision and the mission it advances with gratitude and seriousness of purpose. Under the $2.6 billion contract, SpaceX will launch the Crew Dragon spacecraft atop the Falcon 9 launch vehicle from Kennedy Space Center in Cape Canaveral, Florida.

Crimean Cosmonauts?

Russia has done it again. It is purposely poking the U.S. and Europe as it stated it plans to train its cosmonauts in Crimea, the occupied portion of Ukraine. Needless to say, NASA is not impressed and it again shows why a space partnership with Russia is dangerous and our reliance on Russians to travel to the International Space Station was short-sighted.

At the moment, according to news reports, Russia will use the naval base in Sevastopol for Soyuz survival training.  Will US astronauts be expected to train there? I hope not, and if NASA does not understand this then Congress should forbid it (assuming current laws do not already cover this).  

While one could argue the naval base was leased Russian property before the occupation, Putin's recent decision (and you can be certain nothing happens without his approval) is ill-timed and insulting to Ukrainians. It is one more example that Russia has gone off course and is willing to further jeopardize its reduced standing in the world for cheap political showmanship.

Russian Military Satellite Crashes to Earth

Earlier this month Russia lost a military spy satellite over the United States, though it appears the Russians did not want to admit this at first.  The Kosmos-2495 satellite was launched on May 6, 2014 and burned up on September 3, 2014.  The U.S. Strategic Command's Joint Functional Component Command for Space, which tracks space debris through the Joint Space Operations Center, noted that the satellite "was removed from the US satellite catalog as a decayed object on September 3."

The Russian Defense Ministry originally denied these reports, stating "The Russian satellite group functions normally and is being constantly monitored by the Russian Aerospace Defense Forces."  First Russia's leaders did not know their tanks were in Ukraine and now they cannot locate their satellites.  Who's in charge over there?

Curiosity is Having Some Problems as it Reaches Mount Sharp

After two years, the Curiosity rover is now approaching Mount Sharp in Gale Crater, its primary mission site.  While it has conducted other experiments along the 6 mile route to this final site, it has also taken a beating and damaged its tires.  In discussing the damage caused to Curiosity's tires by jutting rocks (see below), Project Manager Jim Erickson stated ""We misunderstood what Mars was...Strongly cemented ventifacts are not something that we saw on Mars before."

And now NASA's Planetary Senior Review panel is asking if the $2.5 billion Curiosity Mars rover, known as the Mars Science Laboratory, is getting us the science we paid for.  So far Curiosity has examined five surface samples over a two year period and is expected to analyze eight more as part of this mission.  The panel noted:

It was unclear from both the proposal and presentation that the Prime Mission science goals had been met. In fact, it was unclear what exactly these were. Upon detailed questioning, the team noted that the Level 1 requirements were actually engineering capability requirements with which the mission launched and are not reflective of the state of fulfilling mission success criteria, which were not addressed quantitatively.

The panel even criticized the Curiosity team for not taking the panel meeting seriously and not sending the lead Project Science to the meeting.  In the letter, the panel stated, "This left the panel with the impression that the team felt they were too big to fail and that simply having someone show up would suffice."  Ouch! 

The Curiosity team received more funding to continue with parts of its mission, but was told to come back with a plan showing how it could justify continued funding.  Not a very good place to be considering all the cheers two years ago. 

Hopefully, NASA will take away a few lessons that can be applied to the Mars 2020 Rover mission (shown below), which is still being planned.  In fact, the press release for the new rover states "The Mars 2020 mission will be based on the design of the highly successful Mars Science Laboratory rover, Curiosity, which landed almost two years ago, and currently is operating on Mars."  Let's hope the design will be a little different to address the concerns of the review panel.  And maybe upgraded tires would help.

A Nice View of New York

In a video that includes the image above, International Space Station crew members Mike Hopkins and Rick Mastracchio illustrate a number of views back to Earth, including Italy, Greece, and various U.S. cities.  Think of it as a narrated Google Earth.  The video was taken back in February, which explains the snow.  I'm glad it is not all work and no play on the space station. 

You can find more videos at the InsideISS channel on YouTube.

Triton Comes into Focus 25 Years Ago

With all the talk of exoplanets, we sometimes forget how little we know about the planets and moons in our own solar system.  For example, 25 years ago on August 25, 1989, the Voyager 2 spacecraft shined a light on the system as it headed towards the edges of the solar system and beyond.  The image above of Neptune's moon Triton was restored recently by the NASA-funded Lunar and Planetary Institute and turned into a film.  Even back then Voyager 2 could see Triton was an active planet with atmospheric plumes.  Triton is a little larger than Pluto and most likely started the same as Pluto but was caught in the orbit of Neptune.  We should see more of Pluto next July when the New Horizons spacecraft visits the dwarf planet.