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Mars is a busy place
This graphic depicts the relative shapes and distances from Mars for five active orbiter missions plus the planet's two natural satellites. It illustrates the potential for intersections of the spacecraft orbits. An enhanced process of traffic monitoring, communication and maneuver planning ensures that Mars orbiters won't approach each other too closely. Read more…
Climate Time Machine
A new series of visualizations demonstrate how some of Earth's key climate indicators are changing over time.
MESSENGER: The Final Message
The MESSENGER mission concluded last week. Click here to watch a video about the mission. 
Spot The Station
NASA’s Spot The Station service gives you a list of upcoming sighting opportunities for thousands of locations worldwide and will let you sign up to receive notices. The space station looks like a fast-moving plane in the sky, but it is dozens of times higher than any airplane and traveling thousands of miles an hour faster. It is bright enough that it can even be seen from the middle of a city! 
NASA Unveils Celestial Fireworks as Official Image for Hubble 25th Anniversary
The brilliant tapestry of young stars flaring to life resemble a glittering fireworks display in the 25th anniversary NASA Hubble Space Telescope image, released to commemorate a quarter century of exploring the solar system and beyond since its launch on April 24, 1990.