All posts by space

Secrets of Space

Hurricane Amanda

Hurricane Amanda - NASA
Hurricane Amanda photographed from outer space

NASA’s Aqua scientific research satellite took this picture of first named storm of the 2014 North American hurricane season. This May 25, 2014 picture taken near the west coast of Mexico of Hurricane Amanda as it was building itself up as a category 4/5 hurricane with winds as high as 155 mph. Hurricane Amanda eventually weakened to a tropical depression into the eastern Pacific ocean.

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Asteroid Gaspra

Asteroid Gaspra - NASA
Asteroid Gaspra photographed by the Galileo spacecraft

This image of the 17 km long and 10 km wide asteroid was taken by the Galileo spacecraft as it flew by the asteroid Gaspra (951 Gaspra) on October 29, 1991. Gaspra resides near the inner edge of the asteroid belt and has a 7 hour rotation period. This picture is believed to have been taken at a range of 16,000 kilometers (10,000 miles) using Galileo’s solid-state imaging camera. Galileo’s encounter with Gaspra marked the first instance of an asteroid being (so) closely examined by a spacecraft.

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Ahmad Baba crater on Mercury

Ahmad Baba crater - NASA
Messenger gets up close to Mercury’s Ahmad Baba crater

The Ahmad Baba crater, named after a 16th/17th century African writer, is a classic peak rising basin on the planet Mercury. This picture was taken by NASA’s Messenger spacecraft at low altitude (just 184 km above Mercury’s surface) during its second extended mission exploring the planet Mercury.

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Celestial funnels or twisters

Twisters in Space - NASA
Hubble shows us twisters in the Lagoon Nebula

5,000 light years from Earth, towards the Sagittarius constellation, lies the Lagoon Nebula (Messier 8). Hubble Space Telescope took pictures in 1995 using its Wide Field and Planetary Camera 2 (WFPC2) which were combined by NASA to create this image of what looks like violent twisters or funnels occurring within this nebula. These twisters are believed to be formed due to the combination of large difference in temperature between the hot surface and cold interior of the clouds and the pressure of starlight. The bright pinkish light near the bottom right of the image is the central star, O Herschel 36, which is also the main source of ionizing radiation for the region.

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Drilling on Mars

Mars Drilling - NASA
Mars Curiosity rover drills a test hole near the Windjana rock.

The advanced capabilities of Curiosity Mars rover have allowed us to do more in the (unmanned) exploration of this planet than has ever been possible. This picture by the Mars Hand Lens Imager  shows the shallow drill hole (and the residue piled up around it) completed by the  Curiosity Mars rover. This experiment is part of the Mars Science Laboratory initiative and will be evaluating a rock target called “Windjana“. Curiosity is expected to drill deeper (up to 2.5 inches) and evaluate both the drilling and the martian samples it collects.

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