andrea silli
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Lunar Prospector by NASA on The Commons, via Flickr

NASA's Lunar Prospector spacecraft launches successfully on its way to the Moon from Launch Complex 46 at Cape Canaveral Air Station on Jan.

Galaxy

Extreme star cluster bursts into life - The star-forming region NGC 3603 - seen here in the latest Hubble Space Telescope image - contains one of the most impressive massive young star clusters in the Milky Way.

Spacewalking Astronaut John Grunsfeld | Flickr: Intercambio de fotos

A close-up of Astronaut John Grunsfeld shows the reflection of Astronaut Andrew Feustel, perched on the robotic arm and taking the photo. The pair teamed together on three of the five spacewalks during Servicing Mission 4 in May Space by Nasa®

The Fireworks Galaxy (NASA, Chandra, 10/28/13) | Flickr - NASA's Marshall Space Flight Center

NGC The 'Fireworks Galaxy' NGC 6946 is a medium-sized, face-on spiral galaxy about 22 million light years away from Earth. In the past century, eight supernovas have been observed to explode in the arms of this galaxy.

Galaxy NGC 4945 (NASA, Chandra, 10/28/13)

Galaxy NGC 4945 is similar in overall appearance to the Milky Way, but it contains a much more active supermassive black hole.

This is the easiest waterfall hike in the gorge. You get a stunning waterfall at the trailhead and a second one less than half a mile up the trail.

Punch Bowl Falls - Columbia River Gorge National Scenic Area, Oregon, USA Ponytail Falls in the Columbia River Gorge, Oregon, USA (by El Jus.

The Plitvice lakes (Croatia) are renowned for their distinctive colors, ranging from azure to green, grey or blue. The colours change constantly depending on the quantity of minerals or organisms in the water and the angle of sunlight.

plitvice Lakes -- 16 interconnected lakes with waterfalls -- colors changes constantly depending on what mineral content is current along with the angle of sunlight