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Blog Archive

 

State of NASA Earth Observation

Posted by Anna Scott on 2016/05/12 08:00 CDT | 4 comments

Anna Scott gets us up to speed on NASA's Earth-observing missions nearly 60 years into the satellite age.

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Synthesizing DSCOVR-like Images Using Atmospheric and Geophysical Data

Posted by Steve Albers on 2016/04/20 08:00 CDT | 3 comments

Why does our planet look the way it does from space? How does light interacting with land, clouds, water, snow, ice, gases, and various aerosols all come together? One way to learn the answer is to try and synthesize DSCOVR's view from various "building blocks" of geophysical and atmospheric data.

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UPDATED: ESA activates a new old space camera

Posted by Emily Lakdawalla on 2016/02/19 10:45 CST | 2 comments

Inspired by the Mars Webcam on Mars Express, ESA's Cluster mission has turned on a camera on the Cluster spacecraft for the first time since their launch more than 15 years ago. UPDATE: It has now acquired images of Earth.

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Two epic photos of Earth -- but which one is truer?

Posted by Emily Lakdawalla on 2015/12/29 05:19 CST | 1 comments

Two images of Earth taken from different spacecraft at the same time illustrate differences in "true" color imaging among spacecraft.

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December solstice: Viewing Earth's seasonal shifts from space

Posted by Emily Lakdawalla on 2015/12/22 10:12 CST | 2 comments

It's fun to watch the seasons shift from space, and as of this year we have new ways to do that.

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DSCOVR's Halo

Posted by Dave Doody on 2015/07/28 09:04 CDT | 1 comments

The Deep Space Climate Observatory (DSCOVR) has begun sending us fresh, whole-hemisphere images of our own fragile planet. Some sources say that the spacecraft is "orbiting" the L1 point. Dave Doody thinks this warrants some scrutiny.

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DSCOVR mission releases first EPIC global view of Earth, more to come in September

Posted by Emily Lakdawalla on 2015/07/20 02:33 CDT | 17 comments

Five months after its launch, the Deep Space Climate Observatory (DSCOVR) mission has successfully journeyed to the region of space where Sun and Earth gravitational attraction offset each other. From the vantage point of L1, DSCOVR's EPIC camera has captured its first full-globe view of Earth, and it's well, epic.

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The OCO-2 First Light Spectra

Posted by David Crisp on 2014/08/15 01:27 CDT

Dr. David Crisp explains how NASA's Orbiting Carbon Observatory (OCO-2) works, and what its first light spectra tells his team about the spacecraft’s performance.

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Landsat 8 Looks at the Supermoon

Posted by Jason Davis on 2014/07/29 04:00 CDT

Why did Landsat 8, an Earth-observing spacecraft, turn its unblinking eyes toward the July 12 supermoon?

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Reflecting on NASA's Global Precipitation Measurement mission, launching today

Posted by J. Marshall Shepherd on 2014/02/27 11:31 CST | 2 comments

Former deputy project scientist and current science team member J. Marshall Shepherd tells us why missions like NASA's Global Precipitation Measurement (GPM) are vital to our way of life.

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SMAP Under Construction: Field trip to the Spacecraft Assembly Facility

Posted by Emily Lakdawalla on 2013/08/14 04:53 CDT | 2 comments

Yesterday I enjoyed my second-ever opportunity to suit up and enter the clean room of the Spacecraft Assembly Facility at the Jet Propulsion Laboratory. On display were SMAP, an Earth orbiting radar mission, and ISS-RapidScat, which will perform a different radar experiment from the Space Station.

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Beautiful science by Elektro-L

Posted by Vitaliy Egorov on 2013/08/08 03:54 CDT | 7 comments

Six months ago, I wrote about the Russian weather satellite Elektro-L, which has more than two years of successful experience in the geostationary orbit. Then I promised that I would be here to share the materials that we collected. I think it's time to deliver on the promise.

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A rare clear day in Alaska

Posted by Emily Lakdawalla on 2013/07/12 06:00 CDT | 3 comments

NASA recently shared a gloriously detailed image of an unusual clear day in Alaska as seen from the Terra satellite.

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Stationkeeping in Mars orbit

Posted by Emily Lakdawalla on 2013/06/27 10:55 CDT | 11 comments

It had never occurred to me to think about geostationary satellites in Mars orbit before reading a new paper by Juan Silva and Pilar Romero. The paper shows that it takes a lot more work to maintain a stationary orbit at an arbitrary longitude at Mars than it does at Earth.

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Browsing Landsat data is a lot easier than I thought it was

Posted by Emily Lakdawalla on 2013/02/08 05:05 CST | 2 comments

With the Landsat Data Continuity Mission scheduled to launch on Monday, there's been a lot of Tweeting about Landsat, and through one such Tweet I learned about a resource that I hadn't known existed before: the LandsatLook Viewer. This is a graphical interface to more than a decade worth of Landsat data, a tremendous resource for anyone interested in Earth's changing surface, natural or manmade.

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Pretty picture: Jupiter photo from an unusual source

Posted by Emily Lakdawalla on 2012/12/26 01:02 CST | 4 comments

A recently launched Earth-observing satellite is using the stars to practice its pointing, and caught a neat animation of Jupiter.

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Pretty picture: Landsat view of southern Greenland

Posted by Björn Jónsson on 2012/11/13 05:24 CST

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.

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Hurricane Sandy: Thanks for lives saved already

Posted by Emily Lakdawalla on 2012/10/29 11:32 CDT

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.

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NPP Earth observatory launched successfully, and I was there!

Posted by Emily Lakdawalla on 2011/10/28 06:17 CDT

Well, that was awesome. The NPP Earth observation satellite launched successfully an hour or so ago, and I was with a chilled but thrilled crowd of a few hundred people to watch it at Vandenberg Air Force Base.

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NPP Tweetup schedule and launch timeline

Posted by Emily Lakdawalla on 2011/10/26 04:39 CDT

This evening I'll be headed up to Lompoc, California, to participate in my first Tweetup along with 25 other Tweeters.

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