This is an artist's concept depicting a possible scene when the first human travelers might walk on the surface of Mars. The artwork was part of a NASA new initiatives study which surveyed possible future manned planetary expeditionary activity.
Amazon River runs from Peru to Brazil's Atlantic coast. Ed Stafford walked its entire length in two and a half years.
On August 1, almost the entire Earth-facing side of the sun erupted in a tumult of activity. This image from the Solar Dynamics Observatory shows the C3-class solar flare (white area on upper left), a solar tsunami (wave-like structure, upper right), multiple filaments of magnetism lifting off the stellar surface, large-scale shaking of the solar corona, radio bursts, a coronal mass ejection and more.
In this photo from Walt Disney Studios, a great white shark is seen leaping out of the water.
A new study suggests that a global rise in ocean temperatures has cut the number of phytoplankton, which are the bedrock of the food chain, by 40 percent since 1950. Other scientists link the rise in ocean temperatures to global warming.
In this image of the Andes along the Chile-Bolivia border, the visible and infrared data have been computer enhanced to exaggerate the color differences of the different materials. The scene is dominated by the Pampa Luxsar lava complex, occupying the upper right two-thirds of the scene. Lava flows are distributed around remnants of large dissected cones, the largest of which is Cerro Luxsar.
Like a sun on a fast rise, Space Shuttle Atlantis arcs into the still-black sky over the Atlantic Ocean, casting a fiery glow on its way. With a crew of five it is heading on the 10th assembly flight to the International Space Station. The primary payload on the mission is the joint airlock module, which will require two spacewalks to attach it to the Space Station. The airlock will be the primary path for Space Station spacewalk entry and departure for US spacesuits, and will also support the Russian Orlan spacesuit for EVA activity.
Great white shark was caught 20 miles off of the Massachusetts coast. State officials caught the shark and after a 15-minute battle, they were able to tag it.
A Russian Soyuz spacecraft linked up with the International Space Station Thursday with two American astronauts and a Russian cosmonaut aboard. The arrival boosted the space station's crew back up to full strength, with six people now living at the orbiting lab.
If you thought the Gulf oil spill was bad enough, disposable plastic threatens our oceans on a massive scale. Refuse to use it.