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Our journalists and guest bloggers bring you stunning imagery and the space stories that matter most.

Field Report from Mars: Sol 4857

Larry Crumpler • September 22, 2017

Opportunity is continuing its drive down Perseverance Valley, a possible channel that was cut in the inner wall of the 22 km-diameter Endeavour impact crater on ancient Mars.

An honor from The Open University

Emily Lakdawalla • September 22, 2017 • 5

Today in London, Emily Lakdawalla was awarded an honorary degree of Doctor of the University by The Open University.

Meet two astronaut candidates who can help NASA do science on other worlds

Jason Davis • September 21, 2017

Two of NASA's new astronaut candidates are particularly suited to conduct scientific research on other worlds: Zena Cardman, a geobiologist, and Jessica Watkins, a geologist.

In Appreciation of Kim Poor

Donna Stevens • September 20, 2017

We at The Planetary Society are saddened to hear about the recent passing of veteran space artist Kim Poor.

How did China decide where to land its upcoming Moon missions?

Phil Stooke • September 20, 2017 • 2

How were the Chang'e 5 and 4 landing sites chosen? Space exploration historian Phil Stooke explains.

OSIRIS-REx Earth flyby: What to Expect

Emily Lakdawalla • September 19, 2017 • 2

OSIRIS-REx launched on September 8, 2016. Now, a year later, it's returning to its home to get a second boost on to its destination, the asteroid Bennu. It'll test all its cameras on Earth and the Moon in the 10 days after the flyby.

Cassini: The dying of the light

Emily Lakdawalla • September 15, 2017 • 12

Cassini is no more. At 10:31 according to its own clock, its thrusters could no longer hold its radio antenna pointed at Earth, and it turned away. A minute later, it vaporized in Saturn’s atmosphere. Its atoms are part of Saturn now.

Curiosity update, sols 1726-1813: Surveying Vera Rubin Ridge from below

Emily Lakdawalla • September 13, 2017 • 2

Curiosity had a productive three months driving along the front of Vera Rubin Ridge, gathering photos and data with its arm instruments, finally driving up on to the ridge on sol 1809.

And then there was one

Jason Davis • September 11, 2017 • 1

The end of the Cassini mission is a harbinger for a looming gap in outer planets exploration missions.

What to expect during Cassini's final hours

Emily Lakdawalla • September 11, 2017

A timeline of what to expect from the great mission during its final hours.

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