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Impacts and Impact Craters


Craters and Extinctions February 19, 2016


Asteroids February 19, 2016


Venus February 10, 2016

Radio Programs

Moon and Saturn Light and dark on the lunar surface April 15, 2017

Scary Asteroids Cataloging scary space rocks January 15, 2017

Uranus at Opposition Knocking over a giant planet October 13, 2016

Moon and Mars Whipping up the moons of Mars September 9, 2016

OSIRIS-Rex II Keeping an eye on a potential killer September 7, 2016

Moon and Jupiter Vacuuming up some trouble August 5, 2016

One Year Later, II Creation from cosmic violence July 19, 2016

Spacey Artifacts Trinkets from beyond in a pharaoh’s tomb June 24, 2016

Tricky Craters Two holes in the Egyptian desert June 22, 2016

Evening Mercury A hot spot on a hot planet April 15, 2016

Moon and Companions Building a mound on the Moon — after this. January 6, 2016

More Mariner 4 Changing the concept of Mars July 13, 2015

Moon and Antares Digging up some lunar history June 1, 2015

One-Two Punch Space rocks pummel Australia May 29, 2015

Moon and Mars Asteroids take aim at Mars January 21, 2015

Lunar Giant A giant scar on the Moon’s backside December 29, 2014

Hailstorm The inner planets take a beating December 28, 2014

Moon and Companions Cracking the surface of the Moon December 10, 2014

Moon and Saturn Saturn’s moons take a beating August 3, 2014

Impact! Cosmic missiles slam into Jupiter July 15, 2014

Moon and Mars Digging holes on other worlds May 9, 2014

Moon and Regulus Bright flashes on the surface of the Moon March 12, 2014

Earth Impacts V Protecting Earth from space rocks January 9, 2014

Earth Impacts IV Going to work for planetary defense January 8, 2014

Earth Impacts III Violence and beauty in the Sahara January 7, 2014

Earth Impacts II Kick starting an Ice Age January 6, 2014

Earth Impacts The scars of a celestial pounding January 5, 2014

Moon and Mars Drilling holes in the surface of Mars August 31, 2013

Sutter’s Mill A new strike at Sutter’s Mill April 22, 2013

Bright Visitors Bright visitors from beyond Earth April 21, 2013

Messy Impact Debating a devastating impact April 16, 2013

Space Watch IV A very close encounter February 13, 2013

Space Watch III Painting our way out of a jam February 12, 2013

Space Watch II Searching for cosmic bullets February 11, 2013

Space Watch A target in a cosmic shooting gallery February 10, 2013

Diamonds Making “ice” from fire January 9, 2013

Apophis Keeping an eye on a troublemaker January 7, 2013

Homeworld Security Tracking down threats from space August 24, 2012

Featured Images

Colorful Caloris April 15, 2016

Radio view of asteroid 2015 TB145, which will pass close to Earth on Halloween

Boo! October 31, 2015

Lunar Giant December 30, 2014

Possible origin of the Ocean of Storms

Cracks in the Moon December 11, 2014

Giant impact craters on Saturn's moons Mimas and Tethys

Survivors August 4, 2014

Artist's concept of comet impact on Jupiter

Strike One! July 16, 2014

Fresh Martian impact crater seen by an orbiting spacecraft in late 2013

Fresh Impact February 7, 2014

A giant asteroid slams into Earth, leading to global extinctions

Impact! January 6, 2014

Chart showing the path of asteroid 2012 DA14 relative to Earth.

Getting Close February 14, 2013

Craters fill an ancient river channel on Mars

Martian Rapids October 10, 2011

MESSENGER's first color image of Mercury, March 29, 2011

First Glimpse March 31, 2011

Cassini image of Saturn's moon Mimas, October 2010

Scarface October 25, 2010

The aftermath of an asteroid impact in the southern hemisphere of Jupiter

Giant Scar September 20, 2010

Scars of Apollo March 29, 2010

Impact! February 3, 2010