![Mars: As You've Never Seen It Before [Video]](https://static.scientificamerican.com/blogs/cache/file/C1C62D7D-4656-4DC2-A0A8465CA86C215B_agenda.jpg?w=275&h=154&fit=crop)
Mars: As You've Never Seen It Before [Video]
An astonishing rendering of 12 years of orbital images brings the planet to life
"spacecraft"
![NASA's 50 Years of Mars Exploration [Video]](https://static.scientificamerican.com/blogs/cache/file/25E79892-D832-4B5B-B723D390B47D661F_agenda.jpg?w=275&h=154&fit=crop)
NASA's 50 Years of Mars Exploration [Video]
Humans have been visiting and exploring Mars for more than half a century, and NASA has released a video celebrating the agency's remarkable contributions
Rosetta Captures Stunning New Images of Comet’s Surface and Activity
What happens when you make a low-level flyby of a cometary nucleus? You get jaw-dropping images. The above 2-shot mosaic of Comet 67P/Churyumov-Gerasimenko was taken by ESA’s Rosetta orbiter at an effective altitude of just 19.9 kilometers.
NASA's Dawn Mission Captures New Image of Dwarf Planet Ceres
NASA’s Dawn mission, having performed remarkably at the asteroid Vesta, is homing in on Ceres. The spacecraft’s ion engines will bring it to a capture orbit around this 590 mile diameter dwarf planet on March 6th, 2015 – at a distance some 2.5 times further from the Sun than the Earth.
![Shooting for the Moon [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/122C5737-06E7-4413-AE566C4D72D2B408_agenda.jpg?w=275&h=154&fit=crop)
Shooting for the Moon [Slide Show]
Twenty-six nongovernment teams are competing to get a rover on the moon by 2015. Here is a look at one of the best
![Miniature Space Telescope Could Boost the Hunt for "Earth Proxima" [Video]](https://static.scientificamerican.com/sciam/cache/file/E3EC5DD4-3FC5-44B5-94503492791436DB_agenda.jpg?w=275&h=154&fit=crop)
Miniature Space Telescope Could Boost the Hunt for "Earth Proxima" [Video]
A new film presents an innovative plan to image potentially habitable planets around our sun's closest stellar neighbor—Alpha Centauri
How to See Proxima b
Astronomers are racing to get the first historic image of another possibly Earth-like planet. Here’s how they’ll do it
First Active Hydrothermal System Found beyond Earth
Saturn's icy moon Enceladus has a surprisingly warm inner world
Mirror on the Cosmos: NASA's Next Big Telescope Takes Shape
After more than 20 years the giant mirror of the James Webb Space Telescope is finally complete
Kepler Mission Discovers a Near-Twin of Earth Orbiting Sunlike Star
The planet, Kepler 452 b, is likely rocky and orbits in its star’s habitable zone where liquid water can exist
New Horizons Delivers First Close-Up Glimpse of Pluto and Charon
High-resolution images of the icy worlds reveal towering mountains, yawning canyons and perhaps hints of a subsurface ocean
Rocket Explosion Prompts Doubts about Commercial Spaceflight
This week’s fiery failure of Orbital Sciences’s Antares rocket has some wondering if the company has the right stuff to support NASA’s goal to outsource orbital flights
James Webb Space Telescope Surrounded by Rising Floodwaters
Isolated in a giant thermal vacuum chamber, NASA’s $8.6 billion next-generation observatory is riding out the worst of Hurricane Harvey
Sweating the Small Stuff: CubeSats Swarm Earth Orbit
A boom in nanosatellites could revolutionize space science and industry, but also dramatically increase the hazards of space junk
Juno Arrives at Jupiter
After a do-or-die engine burn the second spacecraft ever to orbit Jupiter is preparing to revolutionize our view of the giant planet
Bracing the Satellite Infrastructure for a Solar Superstorm
A recurrence of the 1859 solar superstorm would be a cosmic Katrina, causing billions of dollars of damage to satellites, power grids and radio communications
![Above It All: A Satellite's-Eye View of Pres. Obama's Inauguration [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/2A018B27-0882-4843-A9E601DAD998F9D2_agenda.jpg?w=275&h=154&fit=crop)
Above It All: A Satellite's-Eye View of Pres. Obama's Inauguration [Slide Show]
GeoEye 1 puts an historic event in perspective
![Taking Waves: FCC Green Lights Unlicensed Use of Wireless "White Space" Frequencies [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/5922E6F2-EA76-4E45-AFD528A59C3970C9_agenda.jpg?w=275&h=154&fit=crop)
Taking Waves: FCC Green Lights Unlicensed Use of Wireless "White Space" Frequencies [Slide Show]
But now comes the hard part: making phones, PCs and other mobile gadgets that can take advantage of the broadcast spectrum's strong signals
![A Decade on the Fly: Building the International Space Station--Module by Module [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/045CED9B-4DC8-4639-86D971537B06C134_agenda.jpg?w=275&h=154&fit=crop)
A Decade on the Fly: Building the International Space Station--Module by Module [Slide Show]
Between 1998 and 2010 the station evolved from a single Russian module to a behemoth orbital outpost the size of a football field
![Day-to-Day Satellite Photos Reveal the Unfolding Crisis at the Nuclear Power Plant in Japan [Slide Show]](https://static.scientificamerican.com/sciam/cache/file/CCBB1495-E1E5-4590-837894F01AE6DFB6_agenda.jpg?w=275&h=154&fit=crop)
Day-to-Day Satellite Photos Reveal the Unfolding Crisis at the Nuclear Power Plant in Japan [Slide Show]
Aerial views of the damage at the Fukushima Daiichi power plant from March 12 to March 17 show signs of the chaotic sequence of events ranging from explosions to fires
