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NPP Earth observatory launched successfully, and I was there!

Emily Lakdawalla • October 28, 2011

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.

NPP Tweetup schedule and launch timeline

Emily Lakdawalla • October 26, 2011

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

NPP's launching next week, and I'll be there to see it! (Hopefully.)

Emily Lakdawalla • October 21, 2011

I'm (hopefully) headed to the launch of a Delta II (the last currently scheduled Delta II!) at Vandenberg Air Force Base, as one of only 20 people selected to participate out of more than 600 who registered.

Heads up! ROSAT is coming down this week

Emily Lakdawalla • October 17, 2011

It should give you a feeling of déjà vu: a defunct satellite's orbit is decaying, and because that orbit is circular it's going to be impossible to predict where and when along its ground track it's going to happen.

Earth observing satellites record large Arctic ozone loss

Jason Davis • October 14, 2011

Data from Earth observing satellites Aura and CALIPSO have shown record losses of seasonal ozone in the Arctic.

Finally, an official statement on UARS' exact reentry time and location

Emily Lakdawalla • September 27, 2011

The world watched on Friday as the derelict spacecraft named UARS made its final few orbits around Earth. And then we waited for final word of its reentry location. And waited. And waited.

Earth science's next big thing

Jason Davis • September 22, 2011

Meet the next big thing in NASA's mission to study planet Earth: NPP, the NPOESS Preparatory Project satellite.

Keeping track of UARS' reentry

Emily Lakdawalla • September 21, 2011

Unless you've been living under a rock you've probably heard that a very large Earth-orbiting satellite is going to be reentering Earth's atmosphere soon, and there's a small but nonzero chance of debris coming down where somebody might actually find it.

Congratulations to Russia on the launch of Spektr-R (RadioAstron)

Louis D. Friedman • July 18, 2011

Good news from Russia today: after 20 years of development they have finally launched their RadioAstron satellite (the official name is Spektr-R) into a high elliptical orbit around Earth.

India's launch site as seen by Japan's Daichi orbiter, now lost

Emily Lakdawalla • April 25, 2011

I wrote the following blog entry about an image from Japan's Daichi Earth-observing orbiter last week as one to keep in my back pocket for a day when I was too busy to write, not anticipating that there'd soon be a more pressing reason to write about Daichi. On April 21, after just over five years of orbital operations, Daichi unexpectedly fell silent, and is probably lost forever.

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