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Pretty picture: Landsat view of southern Greenland

Björn Jónsson • November 13, 2012

This is a very large (19000 pixels square) mosaic of the fjords and glaciers of southern Greenland. I had been interested for a long time in experimenting with the processing of Earth satellite imagery just to get a comparison to the other planets.

Hurricane Sandy: Thanks for lives saved already

Emily Lakdawalla • October 29, 2012

Today hurricane Sandy is a major threat to life and property across the west coast of the northern Atlantic ocean. I just want to give thanks in advance to all the people who have devoted their careers to making sure that Americans have sufficient warning of devastating, unstoppable weather events like this one.

Birth of a New Moon

Emily Lakdawalla • July 05, 2012

As astronaut Don Pettit prepared for his return to Earth, he tweeted several beautiful shots from the Space Station.

Talking Climate With Bill Nye

Mat Kaplan • July 03, 2012 • 2

Talk about changing climates on this world and others brought 600 people to the Boulder Theater.

A solar eclipse - as viewed from the Moon

Emily Lakdawalla • May 28, 2012 • 3

A solar eclipse isn't just a spiffy sight to Earthlings; it looks pretty cool to lunar dwellers as well.

More Evidence for Impact Origin for Colombia’s Vichada Structure

Bruce Betts • May 08, 2012

Evidence continues to pile up that the Rio Vichada structure in Colombia is indeed the largest impact structure in South America.

Examining India's new RISAT 1 Earth observation satellite

Jason Davis • May 02, 2012 • 1

Last week, India launched RISAT 1, a new Earth-observing satellite. How does its synthetic aperture radar compare to that of Envisat, which has fallen silent?

Big Bend designated International Dark Sky Park

Neil Patrick Stewart • February 16, 2012

Last week, I received a press release with the headline "Big Bend National Park Designated As International Dark Sky Park." I asked my brother Neil to write something about this announcement for me.

Six days in the crater (day one)

Pat Donohue • February 03, 2012

This is the first in a series of posts based on field notes and memories supplemented by background reading material from the Meteor Crater Field Camp that was held from October 17-23, 2010.

Parallel planetary processes create semantic headaches

Emily Lakdawalla • January 26, 2012

I ran into a semantic problem today: what to call the science of studying liquids on Titan?

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