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Terra Cognita

Bill Dunford • July 29, 2013

Pushing back the frontier, and filling in the blank spaces on the map.

Found a Killer Asteroid? Who Ya Gonna Call?

Mat Kaplan • July 08, 2013

Astronomer Timothy Spahr directs the Minor Planet Center, the global clearinghouse for asteroids, comets and other relatively small objects in the solar system, including moons. He also coordinates the Society's Shoemaker NEO grant program.

Planetary Society Hangout: Arkyd Telescopes, Planetary Resources, Chris Lewicki

Bruce Betts • June 27, 2013

We talked to Chris Lewicki, President of Planetary Resources, about their upcoming Arkyd telescopes including one for the public, asteroid mining, and more. Hosted by Bruce Betts with Jennifer Vaughn.

How radar really works: The steps involved before getting an image

Alessondra Springmann • June 24, 2013

Arecibo Observatory is known for its 1000-foot diameter telescope and its appearances in Goldeneye and Contact. Aside from battling Bond villains and driving red diesel Jeeps around the telescope (grousing at the site director about the funding status of projects is optional), several hundred hours a year of telescope time at Arecibo go toward radar studies of asteroids.

Dawn Journal: Thrusting to a new personal best

Marc Rayman • June 02, 2013

Traveling from one alien world to another, Dawn is reliably powering its way through the main asteroid belt with its ion propulsion system. Vesta falls farther and farther behind as the spacecraft gently and patiently reshapes its orbit around the sun, aiming for a 2015 rendezvous with dwarf planet Ceres.

Say "hi!" to asteroid -- actually, asteroids -- (285263) 1998 QE2

Emily Lakdawalla • May 30, 2013

A large asteroid is passing reasonably close to Earth in a few hours, and astronomers at the great radio telescopes at Goldstone and Arecibo are zapping it. The latest discovery: QE2, like many asteroids, is a binary.

Planetary Defense Conference 2013 Part 2

Bruce Betts • May 29, 2013

Second part of a three part wrap up to April's Planetary Defense Conference: a report on Planetary Shoemaker NEO Grant related activities and people at the Planetary Defense Conference 2013

Planetary Defense Conference 2013 Part 1

Bruce Betts • May 24, 2013

First part of a 3 part wrap up to April's Planetary Defense Conference: a very brief review of the status of research in asteroid threat related fields based on the conference, report on special activities at the conference, and links to video and audio related to the conference.

Asteroids – what you can do

Alex Karl • May 23, 2013

Partnering with our friends from The Planetary Society, the Space Generation Advisory Council (SGAC), whose members hail from all over the globe, is bringing you an update on our activities and something you can join in on—at least if you are a student or young professional aged 18–35.

ISIS: Blasting a Crater on Asteroid Bennu

Van Kane • May 16, 2013

An exciting new option to enhance NASA's OSIRIS-REx asteroid mission has been proposed by Steve Chesley at JPL. The ISIS spacecraft would impact asteroid Bennu to expose its interior structure to OSIRIS-REx.

Saving the Planet can be Exciting!

Mat Kaplan • May 07, 2013

Planetary Radio for the week of May 6 visits the Planetary Defense Conference one last time to join a "tabletop" simulation of a killer asteroid threat.

Dawn Journal: A low-orbit shortcut to Ceres

Marc Rayman • May 02, 2013

Marc Rayman's latest Dawn Journal explains why Dawn is currently closer to the Sun than both Ceres and Vesta.

An Amazing Evening for Planetary Defense

Mat Kaplan • April 23, 2013

Bill Nye, Bruce Betts, Mat Kaplan, Meteorite Man Geoffrey Notkin and stars of planetary science at the Planetary Defense Conference public event in Flagstaff.

Dawn Journal: Staying warm en route to Ceres

Marc Rayman • March 30, 2013

Marc Rayman's latest Dawn journal explains the temperature adjustments engineers make to save power and keep the spacecraft warm.

LPSC 2013: The Smaller They Are, The Better They Shake

Emily Lakdawalla • March 25, 2013

Really cool movies from Jim Richardson propose to explain how the same physics of impact cratering can produce such differently-appearing surfaces as those of the Moon, large asteroids like Eros, and teeny ones like Itokawa.

Planetary Society Weekly Hangout: the Giant ALMA Observatory, and Asteroid Tracking

Bruce Betts • March 20, 2013

Bruce Betts, Mat Kaplan, and asteroid tracker Robert Holmes on the Planetary Society Weekly Google Hangout. Mat discussed and showed pictures from his trip to the giant ALMA observatory and we'll be joined by asteroid tracker extraordinaire, Robert Holmes.

Planetary Society Weekly Hangout: Being WISE about asteroids, comets, and brown dwarfs with Amy Mainzer

Emily Lakdawalla • March 14, 2013

This week I'll be talking with NEOWISE principal investigator Amy Mainzer about moving objects that the WISE mission has spotted both inside and outside our solar system.

Galileo's images of Gaspra

Emily Lakdawalla • March 01, 2013

Last week I trawled the archives to find all of Galileo's images of asteroid Ida; this week, I turned to Gaspra.

Dawn Journal: Revisiting orbital mechanics

Marc Rayman • March 01, 2013

Now that Dawn has changed its speed by nearly eight kilometers per second, Marc Rayman revisits the concept of orbital velocity.

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