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New Gems from the Moon

Bill Dunford • October 10, 2016

More than seven years after the end of its mission, JAXA has released the entire data set from Kaguya's HDTV cameras.

Gullies on Mars: Wet or Dry (Ice)?

Tanya Harrison • August 17, 2016

Martian gullies were in the spotlight last week thanks to a NASA press release stating they were "likely not formed by liquid water" based on spectral results. But how does this stack up against their morphology?

Whither the Weather? A Jet Stream Explainer

Anna Scott • June 07, 2016

Jet streams are found in planetary atmospheres throughout our solar system. But what exactly are they?

Space Exploration: Leaving the Earth to Understand It

Jake Rosenthal • May 13, 2016

Looking back at Earth from beyond helps to give perspective on our place in the cosmos.

State of NASA Earth Observation

Anna Scott • May 12, 2016

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

The what-o-sphere? An explainer

Anna Scott • May 05, 2016

Why do we need to slice up atmospheres into classifications like the troposphere, stratosphere, mesosphere, and thermosphere?

Atmospheric Waves Awareness: An Explainer

Anna Scott • April 20, 2016

There are two types of atmospheric waves that are critically important on Earth and other planets: gravity waves and planetary waves.

Synthesizing DSCOVR-like Images Using Atmospheric and Geophysical Data

Steve Albers • April 20, 2016

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.

UPDATED: ESA activates a new old space camera

Emily Lakdawalla • February 19, 2016

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.

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

Emily Lakdawalla • December 29, 2015

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

December solstice: Viewing Earth's seasonal shifts from space

Emily Lakdawalla • December 22, 2015

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

Hayabusa2 views Earth and the Moon on approach to December 3 flyby

Emily Lakdawalla • December 01, 2015

I just love photos of Earth from planetary missions -- especially if they manage to get Earth and Moon in the same shot, as Hayabusa2 did on November 26.

Two JAXA mission updates: Akatsuki Venus orbit entry and PROCYON Earth flyby coming up!

Emily Lakdawalla • November 19, 2015

Akatsuki is finally approaching its second attempt to enter Venus orbit, on December 7; let's all wish JAXA the best of luck! And PROCYON, whose ion engines have failed, is still an otherwise perfectly functional spacecraft that is taking photos of Earth and the Moon as it approaches for a flyby.

A Day in the Solar System: 28 October 2015

Bill Dunford • November 09, 2015

On October 28th, the Cassini spacecraft flew through the geyser plume of Saturn's moon Enceladus. But Cassini was not the only spacecraft operating in the solar system that day.

A Roundup of Dust Devil Research

Ralph Lorenz • November 02, 2015

Planetary scientist Ralph Lorenz briefs us on the current state of our knowledge on dust devils on Earth and Mars.

Preparing for the Journey to the Moon, Mars and Beyond

Deepak Dhingra • October 21, 2015

Deepak Dhingra reports on a planetary analog field trip exploring a very young volcanic terrain in Idaho at Craters of the Moon National Monument and Preserve.

Searching for the Origins of Earth’s Water

Van Kane • September 17, 2015

Three recently proposed low-cost space missions all aim to answer the same question: Where did Earth's abundant water come from?

In Pictures: West Virginia from Space

Jason Davis • July 29, 2015

Jason Davis shares five images of his home state, West Virginia, taken by astronauts aboard the International Space Station.

DSCOVR's Halo

Dave Doody • July 28, 2015

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.

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

Emily Lakdawalla • July 20, 2015

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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