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Blog Archive


Pluto minus one day: Very first New Horizons Pluto encounter science results

Posted by Emily Lakdawalla on 2015/07/13 12:16 CDT | 15 comments

At a press briefing this morning, New Horizons principal investigator Alan Stern divulged some extremely preliminary first science results from the New Horizons Pluto encounter. Science results include Pluto's diameter and information on its surface composition and atmospheric escape.

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Zooming in to Pluto and Charon

Posted by Emily Lakdawalla on 2015/07/12 07:31 CDT | 9 comments

In the span of a few days, Pluto and Charon have turned from spots into worlds. The latest images from New Horizons are showing Pluto and Charon to have unique faces, distinct from any other icy worlds in the solar system.

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Explore Pluto in Google Earth!

Posted by Alex Parker on 2015/07/08 01:38 CDT | 3 comments

The Pluto encounter team is producing the first maps of Pluto using images collected by New Horizons. You can now easily download the map and explore the best Pluto maps ever made!

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New Horizons is a Triumph for Space Advocates
And Europa will be the same

Posted by Casey Dreier on 2015/07/07 03:40 CDT | 5 comments

New Horizons—what will be NASA’s greatest success of 2015—was cancelled multiple times in its early life, and many times before that in its previous incarnations. A mission to Pluto was not inevitable, despite the overwhelming scientific and public excitement.

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Opening the New Horizons Time Capsule

Posted by Bruce Betts on 2015/07/07 10:03 CDT | 3 comments

The New Horizons digital time capsule is opened, with the New Horizons Pluto flyby only one week away, showing images from Earth 2006 – the year New Horizons launched. Fifty images and captions from people in 17 countries were selected to be in the time capsule to reflect things expected to change by 2015.

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New Horizons "back in action" after safe mode event, ready to resume encounter science

Posted by Emily Lakdawalla on 2015/07/06 04:12 CDT | 10 comments

NASA held a press briefing today to explain the nature and cause of the spacecraft anomaly that halted science on New Horizons for four days as it was on its terminal approach to Pluto. As of the moment that I write this post, New Horizons is not yet performing science observations, but it will resume them tomorrow, July 7.

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New Horizons enters safe mode 10 days before Pluto flyby [UPDATED]

Posted by Emily Lakdawalla on 2015/07/05 10:25 CDT | 18 comments

New Horizons decided to put on a little 4th of July drama for the mission's fans. It's currently in safe mode, and it will likely be a day or two before it recovers and returns to science, but it remains on course for the July 14 flyby. Here's the mission update in its entirety.
[UPDATE]: Normal operations are planned to resume July 7.

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Pluto's progression: Third-to-last Pluto day before encounter

Posted by Emily Lakdawalla on 2015/07/03 08:49 CDT | 6 comments

Only two days remain until New Horizons' historic encounter with Pluto....two Pluto days, that is. Pluto and Charon rotate together once every 6.4 days, so as New Horizons has approached the pair over the last week, we've been treated to one stately progression of all of their longitudes.

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What to expect when you're expecting a flyby: Planning your July around New Horizons' Pluto Pictures (version 2)

Posted by Emily Lakdawalla on 2015/06/24 07:57 CDT | 22 comments

Three months ago, I posted an article explaining what to expect during the flyby. This is a revised version of the same post, with some errors corrected, the expected sizes of Nix and Hydra updated, and times of press briefings added.

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New Horizons update: Resolving features on Charon and seeing in color

Posted by Emily Lakdawalla on 2015/06/23 11:02 CDT | 13 comments

Only about three weeks remain until the flyby — it's getting really close! I almost don't want the anticipation to end. New Horizons is now getting color images and is seeing features on Charon. Deep searches have yielded no new moons.

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Pluto and Charon spin among the stars

Posted by Emily Lakdawalla on 2015/06/16 08:10 CDT | 7 comments

I've spent a happy couple of days playing with raw data downloaded from the New Horizons website, making animations of the dances of Pluto and Charon.

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An enigmatic line across Pluto: Plutonian canali!?

Posted by Emily Lakdawalla on 2015/06/09 07:03 CDT | 17 comments

Pluto and Charon are growing larger in New Horizons' forward view, beginning to develop distinct personalities. A version of recent New Horizons photos processed by Björn Jónsson reveals an enigmatic dark line. Our maps of Pluto's surface are now as good as our maps of Mars and Venus, circa 1900!

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A (very) few more details on Pluto

Posted by Emily Lakdawalla on 2015/06/01 04:09 CDT | 9 comments

Last week the New Horizons mission released a few new processed versions of their latest and greatest images of Pluto. They're the best images of Pluto that Earth has ever seen, but they're still a long way from what New Horizons will be able to show us, six weeks from now.

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Two Months from Pluto!

Posted by Paul Schenk on 2015/05/19 06:12 CDT | 5 comments

Two months. Eight and half weeks. 58 days. It's a concept almost too difficult to grasp: we are on Pluto's doorstep.

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New Horizons spots Kerberos and Styx

Posted by Emily Lakdawalla on 2015/05/12 05:56 CDT | 3 comments

New Horizons has now spotted every one of Pluto's satellites...all the ones we know about, that is.

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New Horizons sees surface features on Pluto, begins raw image release

Posted by Emily Lakdawalla on 2015/04/29 08:06 CDT | 11 comments

Today the New Horizons team released a new animation of images taken on approach to Pluto. The animation clearly shows how Pluto wobbles around the Pluto-Charon barycenter. It also shows something more exciting to the scientists: variations in brightness across the surface of Pluto. They also began releasing raw images to the Internet.

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New Horizons One Earth Message

Posted by Mark Washburn on 2015/04/24 02:08 CDT | 3 comments

The One Earth Message Project is going to send a message to the stars, and we invite members of the Planetary Society to join us in this historic endeavor.

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What Color Does the Internet Think Pluto Is?

Posted by Alex Parker on 2015/04/20 03:08 CDT | 2 comments

Astronomers have known for a long time that Pluto’s surface is reddish, so where did the common idea that Pluto is blue come from?

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New views of three worlds: Ceres, Pluto, and Charon

Posted by Emily Lakdawalla on 2015/04/16 03:17 CDT | 7 comments

New Horizons took its first color photo of Pluto and Charon, while Dawn obtained a 20-frame animation looking down on the north pole of a crescent Ceres.

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Ceres Gets Real; Pluto Lurks

Posted by Paul Schenk on 2015/03/27 04:10 CDT

Although we are still along way from understanding this fascinating little body, Ceres is finally becoming a real planet with recognizable features! And that's kinda cool.

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