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Watching the slow shift of seasons on Titan

Emily Lakdawalla • November 06, 2012

A sharp-eyed amateur noticed two images of Titan taken 20 months apart from nearly exactly the same perspective, and they illustrate how the shifting of Saturn's seasons has brought change to Titan's atmosphere.

Hurricane Sandy: Thanks for lives saved already

Emily Lakdawalla • October 29, 2012

Today hurricane Sandy is a major threat to life and property across the west coast of the northern Atlantic ocean. I just want to give thanks in advance to all the people who have devoted their careers to making sure that Americans have sufficient warning of devastating, unstoppable weather events like this one.

DPS 2012: The most detailed images of Uranus' atmosphere ever

Emily Lakdawalla • October 22, 2012

New ground-based images of Uranus show more finely detailed structure than any photos I have ever seen.

New spots on Uranus

Emily Lakdawalla • August 22, 2012

New Hubble photos show that Uranus has both dark and bright spots!

Talking Climate With Bill Nye

Mat Kaplan • July 03, 2012

Talk about changing climates on this world and others brought 600 people to the Boulder Theater.

Third Martian Anniversary for Mars Climate Sounder

David Kass • May 16, 2012

May 16, 2012 is the third martian anniversary of the start of Mars Climate Sounder (MCS) observations from Mars Reconnaissance Orbiter. MCS started measuring the atmosphere of Mars three Mars years ago, on September 24, 2006. We can now compare the weather and behavior of the atmosphere in three different years, and find the temperature differences to be surprisingly large.

Examining India's new RISAT 1 Earth observation satellite

Jason Davis • May 02, 2012

Last week, India launched RISAT 1, a new Earth-observing satellite. How does its synthetic aperture radar compare to that of Envisat, which has fallen silent?

Notes from Titan talks at the 2012 Lunar and Planetary Science Conference (LPSC)

Emily Lakdawalla • March 20, 2012

One of the topics I found most exciting yesterday was a series of talks on Titan's climate. Bob West showed how Titan's detached haze has shifted with time. Zibi Turtle presented about how Titan's weather has changed with these seasonal changes. Jason Barnes followed up Zibi's talk -- which was based on Cassini camera images -- with a study of the same regions using data from Cassini's imaging spectrometer, trying to figure out what was going on with that brightening. Ralph Lorenz talked about rainfall rates on Titan. Jeff Moore asked: what if Titan hasn't always had a thick atmosphere?

Emily's New Video Series: Snapshots From Space

Mat Kaplan • February 20, 2012

This is the first episode of editor Emily Lakdawalla's new video series exploring the solar system.

The state of Earth observation, January 2012

Jason Davis • January 09, 2012

As of November 2011, the Earth Observing Handbook counts 109 active missions to study the Earth as a planet, with 112 more approved and planned for the future. Jason Davis provides an overview of key current and upcoming earth-observing missions.

Mars Climate Sounder confirms a Martian weather prediction

Emily Lakdawalla • October 25, 2011

The Mars Climate Sounder team has recently confirmed a prediction of a weather phenomenon on Mars that we haven't been able to observe before.

Nighttime Water Ice Clouds Predicted by Models are Confirmed by MCS Observations

Jim Shirley • October 25, 2011

The Mars Climate Sounder instrument provides routine nightside observations of atmospheric temperature and opacity that document the presence of rapidly evolving water ice cloud layers in the Martian tropics during the northern summer season.

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.

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.

NASA thinks Earth is a planet, too

Jason Davis • August 08, 2011

Although much of the publicity NASA receives focuses on planetary exploration, Earth observing satellites like Aqua keep tabs on our home planet's weather and climate.

Happy Earth Day!

Bill Nye • April 22, 2011

The Earth is important, and sometimes we need a reminder as to just how fragile it is.

Evidence for rain on Titan

Emily Lakdawalla • March 22, 2011

Last week, Zibi Turtle and Jason Perry and a dozen other coauthors published a paper in Science discussing evidence for rain on Titan.

Some recent pictures of Saturn's northern storm

Emily Lakdawalla • February 07, 2011

There is a huge storm that's spreading across so much of Saturn that it's been readily visible even from Earth-based telescopes. Over the past couple of days a couple of new images of Saturn have appeared that show just how enormous the storm is today.

Mars Climate Sounder Watches Mars Weather to Prepare for Curiosity Landing

David Kass • September 29, 2010

Two weeks ago Mars Reconnaissance Orbiter and Mars Climate Sounder (MCS) started a four-week campaign to support entry, descent, and landing phase for the next Mars rover, Mars Science Laboratory (or "Curiosity").

Tracing the Big Picture of Mars' Atmosphere

Bruce Betts • August 26, 2010

One of the instruments on a 2016 mission to orbit Mars will provide daily maps of global, pole-to-pole, vertical distributions of the temperature, dust, water vapor and ice clouds in the Martian atmosphere.

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