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\

New Moons Around Pluto

While Pluto might no longer be considered a planet, NASA still plans to visit the dwarf planet via New Horizons in July 2015.  Launched in 20016, the New Horizons space craft is already half-way to Pluto after passing Uranus. 

In preparation for the flight, the Hubble space telescope has been monitoring Pluto's neighborhood to make sure the New Horizons spacecraft does not smack into any unknown objects.  This turned out to be a pretty good idea since Hubble has already discovered two new moons over the course of about a year. 

In July 2011, NASA announced the discovery of a fourth moon, labeled P4.  This new moon has a diameter of only 8 to 21 miles, making it small enough to escape detection all of these years but large enough to cause problems for a NASA mission.  And this past July, Hubble located Pluto's fifth moon, P5 (yes, this naming is quite creative).  P5 is even smaller than P4.  Oddly, NASA's New Horizons website has yet to announce this discovery.  The graphic below provides some size comparisons.

Remember, Hubble located the second and third moon, Nix and Hydra, back in 2005.  The largest moon, Charon, was discovered in 1978 by the U.S. Naval Observatory.  Pluto and its moons reside inside the Kuiper Belt about 3 billion miles from the Sun.

If you are looking for more on why Pluto is no longer a "real" planet, you can always read Mike Brown's book How I Killed Pluto and Why It Had It Coming.  Mike Brown is the Richard and Barbara Rosenberg Professor of Planetary Astronomy at the California Institute of Technology,  As he explains, not everyone was happy with his discovery of 10th planet, Eris:

My daughter Lilah, now five years old, is mad at me for killing Pluto. When I began a project 13 years ago to chart the slowly-moving objects of the distant outer solar system, my goal was never to pull Pluto off of its cherished planetary pedestal. I wanted to be a planet discoverer, like William Herschel or Clyde Tombaugh before me. I had a strong feeling that somewhere out there something bigger than Pluto was lurking, and I knew that whoever found it would get to claim the mantle as the only living planet discoverer. 

I was right. Something bigger than Pluto was out there (or at least something more massive than Pluto; sizes are a little harder to pin down precisely) and one January morning in 2005, my small team of astronomers and I found it. We announced the discovery of the 10th planet to an unsuspecting world late on the afternoon of Lilah’s 22nd day of life. A little after her first birthday, though, the doors to the planetary club were locked and Pluto and my own discovery were kicked out on the curb. The solar system was down to only eight planets.

Another Space Program with Spare Parts for NASA

Earlier I noted how the U.S. Department of Defense (DoD) already has its own space shuttle program and maybe more sharing of resources could assist NASA.  Well, I forgot that DoD is just one of a number of federal agencies with its own space program.  For instance, the National Reconnaissance Office (NRO), one of our spy agencies, runs its own satellite and telescope missions as well, though these telescopes peer back onto Earth.  And now it appears that some inter-agency sharing is underway.

The Washington Post reported that two left-over NRO telescopes sitting in Rochester, NY, will go to NASA.  Both telescopes are as large as the Hubble space telescope though they have a much wider field of view.  In fact, the telescopes may be better than the current Hubble telescope, and potentially meet the needs of the now stalled Wide-Field Infrared Survey Telescope (WFIRST). WFIRST's goals are exoplanet exploration, dark energy research, and galactic and extragalactic surveys.

The problem is that NASA will have to make a number of modifications to make them useful, and the funding problems at the Agency will make such modifications difficult.  NASA astrophysics director Paul Hertz said the new telescopes are unlikely to be launched before 2024, noting “Any dates earlier, like 2019 or 2020, is if money is no object,” Hertz said. 

While Congress continues to starve our space programs, it is nice to learn federal agencies are communicating.  This is not the same as having one national space program, but it is better than nothing.

Hubble: There's an App for That

Do you need a little inspiration when going about your errands?  Is the night sky still hours away yet you want to see something interesting now?  Well, download the HubbleSite app from the iTunes store and you will have the universe at your fingertips. 

Here is the quick description from the app site: 

HubbleSite, the online home of NASA’s Hubble Space Telescope, invites you to help choose the world’s most popular Hubble images. Get wallpaper, Hubble facts, and more.

Hubble’s vast collection of images awaits your critical and discerning eye. Become part of the Hubble mission by voting for the most spectacular and awe-inspiring sights from Hubble’s archive.

The app provides a selection of Hubble wallpaper images, chosen and edited for visually stunning results on the iPhone and iPod Touch. Plus, get facts about Hubble history; the telescope; and the scientific discoveries it’s revealed, from the age of the universe to the mysterious force known as dark energy. The app has been optimized for iPhone and iPod Touch’s Retina display.

For over 20 years, Hubble has orbited the Earth, beaming home images of celestial splendor. Join in the excitement of the Hubble mission.

And if you need more, try out the  Hubble Top 100 app from the European Southern Observatory.