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Dawn Journal: Going Out on a High...Or Maybe a Low

Marc Rayman • July 18, 2018

Rapidly nearing the end of a unique decade-long interplanetary expedition, Dawn is taking phenomenal pictures of dwarf planet Ceres as it swoops closer to the ground than ever before.

How India built NavIC, the country's own GPS network

Gurbir Singh • July 17, 2018

The country's satellite navigation system faced a long and difficult road, but it's finally operational.

Pretty Pictures of the Cosmos: The Cosmic Ocean

Adam Block • July 16, 2018

Award-winning astrophotographer Adam Block shares some of his most recent images of our amazing and beautiful universe.

NEA Scout unfurls solar sail for full-scale test

Jason Davis • July 13, 2018

The next time its solar sail is deployed, NEA Scout will be out near the Moon.

Generation Zero of JPL Planetary Rovers

Mike Blackstone • July 12, 2018

The Jet Propulsion Laboratory has a fabled history of planetary rovers. But how do you start such a program?

New goodies from asteroid Ryugu!

Jason Davis • July 11, 2018

Two new global views of Ryugu from Hayabusa2, plus a 3-D animation.

The Bounty of Iron Meteorites Found on Mars

Linda Martel • July 10, 2018

Something new and wonderful appeared in the Meteoritical Bulletin Database—an entire listing of meteorites found on Mars by robotic rovers and their science teams from the years 2005–2017.

Walking on Mars: Bringing the Red Planet Down to Earth

Jonathon Hill • July 06, 2018

What happens when you print a map of Mars the size of a basketball court?

What's the benefit of sample return?

Jason Davis • July 05, 2018

With Hayabusa2 at Ryugu and OSIRIS-REx closing on Bennu, it's the summer of sample return. Why do scientists go to so much trouble for a piece of a another world?

The Mars Exploration Rovers Update: Opportunity Sleeps as Storm Chasers Study Planet-Encircling Dust Cloud

A.J.S. Rayl • July 04, 2018

As a monster dust storm grew to encircle the Red Planet in June, Opportunity spent most of the month in the dark, presumably sleeping in a hibernation mode as the skies over Endeavour Crater became darker and darker.

Planetary Defense in the Moroccan Mountains

Jason Davis • July 03, 2018

A little-known observatory is s helping usher an Arab astronomy renaissance.

Programming note

Emily Lakdawalla • July 01, 2018

Emily Lakdawalla is on vacation from 1 to 22 July. Jason Davis will reign over the blog in her absence.

Curiosity update, sols 2027-2092: Return to drilling at Duluth, sciencing the dust storm

Emily Lakdawalla • June 29, 2018

Hooray! Curiosity has triumphantly returned to drilling with a successful drill and delivery to its lab instruments at a site named Duluth. It's now studying the dust storm as it drives to new drill sites on Vera Rubin ridge.

Let's check in on The Planetary Society's asteroid hunters

Jason Davis • June 29, 2018

The Shoemaker NEO Grant program funds advanced amateur astronomers who help determine if nearby asteroids will hit Earth. Here are some collected reports from our asteroid hunters.

Hayabusa2 arrived at Ryugu, so I can make comparisons of asteroid scales!

Emily Lakdawalla • June 27, 2018

On 26 June 2018, Hayabusa2 arrived at its target asteroid, Ryugu. In a very brief status update, I present comparisons of Ryugu to other previously visited asteroids and comets.

Will an asteroid hit Earth? Your questions answered.

Bruce Betts • June 26, 2018

The Planetary Society presents a list of Frequent Asteroid Questions (FAQs).

Hayabusa2 update: New views of Ryugu and corkscrew course adjustments

Emily Lakdawalla • June 21, 2018

Ryugu has continued to grow in Hayabusa2's forward view, resolving into a diamond-shaped body with visible bumps and craters! They've done hazard searches, optical navigation imaging, and measured the rotation rate at 7.6 hours.

New report explores threat from near-Earth asteroids

Jason Davis • June 20, 2018

How dangerous are near-Earth asteroids, and what will we do if we find one headed toward Earth?

Rotatin' Ryugu!

Jason Davis • June 18, 2018

Hayabusa2 continues to approach asteroid Ryugu, revealing the 900-meter-wide world in all its glory.

The Mars Exploration Rovers Update Special Report: Opportunity Pummeled by Massive Dust Storm, Hunkers Down to Sleep

A.J.S. Rayl • June 15, 2018

Entrenched in the west rim of Endeavour Crater, veteran robot field geologist Opportunity is hunkered down in Perseverance Valley in a kind of hibernation mode.

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