Our June meeting will be at our usual date and location on the third Saturday (June 21, 11 am) at the Humanist Center in Tempe. Dr. Dave Williams will talk about “Exploring the Solar System”, which is an overview of the NASA missions exploring destinations throughout the solar system.
Dr. David A. Williams is an Associate Research Professor in the School of Earth and Space Exploration at Arizona State University, Tempe, Arizona. Dr. Williams is the Director of the Ronald Greeley Center for Planetary Studies, the NASA Regional Planetary Information Facility at ASU. He is also the Director of the NASA Planetary Aeolian Laboratory at the Ames Research Center in California. David is currently performing research in volcanology and planetary geology, with a focus on planetary mapping, geochemical, and remote sensing studies. His research has included computer modeling of seismic wave propagation through planetary interiors, visible and near-infrared spectroscopy of the lunar surface, planetary geologic mapping of the satellites of Jupiter, the planet Mars, and the asteroid Vesta, computer modeling of the physical and geochemical evolution of lava flows in a variety of planetary environments, and petrologic study of lava samples from Mount St Helens. He was involved with NASA’s Magellan Mission to Venus and Galileo Mission to Jupiter. He is a Co-Investigator on the European Space Agency’s Mars Express orbiter mission, and he was a Participating Scientist on NASA’s Dawn Mission to asteroid Vesta. David is a Past Chair of the Planetary Geology Division of the Geological Society of America, and has served on several NASA committees including a five-year term on the NASA Outer Planets Advisory Group.
Mike Mackowski will also give a report on my trip to LA to attend the NSS’s International Space Development Conference, as reported elsewhere on this blog.
Please join us!
by Michael Mackowski
Outer space may literally be mostly empty space, but our solar system is full of large and small chunks of rocks. A few days ago, a couple of these rocks made a close pass to our home planet. One object, called asteroid DA14, was large enough to be detected about a year ago. It came within 17,200 miles of the Earth’s surface, within the ring of geostationary communications satellites we all rely on. There was enough information on this object to know in advance that it would come close, but miss us. Still, this asteroid was the closest large object to pass by the Earth that we saw ahead of time.
Meanwhile a smaller object, perhaps the size of a school bus, whizzed over Russia, and when it exploded several miles above the ground, the shock wave was strong enough to smash windows over a large area, injuring over a thousand people from flying glass. This object was too small to be detected in advance, at least with the technology we are using today.
Commentary by Mike Mackowski
From the classic days of space science fiction to the projections of large scale operations in space from the 1960s and 70s, utilization of space resources has always been envisioned as a major part of large scale space operations. Now in the early 21st Century we finally have at least two serious companies formed whose goal is to mine asteroids. Planetary Resources announced their plans in 2012 while this January we heard about Deep Space Industries. This is a very exciting prospect for any advocate of expanded human presence in space. Continue reading
OUR COSMIC CHALLENGE:
STATEMENT FROM ED LU, CEO, B612 FOUNDATION
The B612 Foundation believes we should find threatening asteroids before they find us. The undetected meteor explosion over Chelyabinsk on February 15 is our wake-up call that the Earth orbits the Sun in a shooting gallery of asteroids, and that these asteroids sometimes hit the Earth. On this same day, a separate and larger asteroid, 2012 DA14, narrowly missed the Earth passing beneath the orbits of our communications satellites.
We have the technology to deflect asteroids, but we cannot do anything about the objects we don’t know exist. To date, less than 1% of asteroids larger than the one that leveled Tunguska in 1908 have been tracked. The B612 Foundation Sentinel Space Telescope, to be launched in 2018, will
provide a comprehensive map of the locations and trajectories of threatening asteroids and will give humanity the decades of warning needed to prevent asteroid impacts with existing technology.
By the end of its planned lifetime, Sentinel will have discovered well over 90% of the asteroids that could destroy entire regions of Earth on impact (those larger than 350 ft in diameter) and more than 50% of the currently unknown DA14-like near-Earth asteroids.
The B612 Foundation has undertaken this Sentinel project as a non-governmental initiative, somewhat akin to a growing number of private space ventures originated in the past few years. The foundation is not undertaking this project for profit; we are a non-profit corporation. Our motivation is strictly to ensure the survival of life on Earth — all of it. And while NASA is cooperating with us by providing certain communication and analytic services, we are excited, as a private venture, to welcome the participation of all the crew of Spaceship Earth in this great endeavor.
We have to answer the question: Does the crew of Spaceship Earth raise our awareness and accept responsibility for our voyage into the future? Or do we sit back as passengers, comfortably assuming that there must be a captain and crew doing this job on our behalf? The B612 Sentinel mission is testament to our belief that we, together, are responsible for the future of life on our small planet. We invite you to join us by going on our website http://www.b612foundation.org and on Twitter (@b612foundation) to help us address this cosmic challenge.