Live video chat on Ustream, Sat 4/21, 1pm ET - 'NASA High-Tech Checkup of Earth's Vital Signs'. bit.ly/J5gMIe #Earthday

In time for #EarthDay, this month's #ESAkids Earthobservation comp winners are a class from #Barcelona bit.ly/IYCabE #GOCE

CryoSat improving ocean bathymetry with new combination of SAR altimetry and non sun-synchronous orbit. See: esa.int/esaEO/SEM037ZW…

NASA's Aquarius spacecraft is  advancing our understanding of the saltiness of the ocean's top layer! go.nasa.gov/JXH5LD

Incredible photos of "star trails" on @slate ow.ly/bvRg7

MT ESA Herschel: For your Smartphone: App to look at Herschel images, as they are processed: herschel.esac.esa.int/hipe

Big House, Summit Camp, Greenland

Inside Big House

Rime

A new version of CryoSat User Tool (CUT) 3.0.1 has been released. This new version can be download from bit.ly/PFBvBK.

[Image of the Day] SpaceX Launches for the International Space Station go.nasa.gov/R8Hu1Z #iotd

RT NASA: Watch the Video: SpaceX's Falcon 9 rocket and #Dragon liftoff on 1st commercial cargo flight to #ISS. go.nasa.gov/R8xuG4

Matlab routines that read CryoSat FBR, L1b and L2 products are now available for free. bit.ly/UvKy8D

[Video] Did you miss the #Landsat launch 45 min ago? Watch it online: go.usa.gov/4Gxz #NASASocial ARCHIVED - NASA Landsat USGS Landsat

[Image of the Day] Landsat Spacecraft Launches go.nasa.gov/11BV5ZM

Live view of 2012 DA14 is now available on NASA JPL's @UStream: go.nasa.gov/lgGzHf View courtesy the Murrumbateman Observatory, Australia

Here's the latest video of today's close-approaching asteroid #2012DA14: go.nasa.gov/11KIGTr

Reminder: How to spot #Asteroid #2012DA14 over Europe tonight bit.ly/XqL1KT

.ARCHIVED - NASA Ice's #IceBridge is underway in Greenland for 2014. Here is the moon over NE Greenland nasa.gov/content/goddar…