Category: Science and Technology

Pictures from Apollo 11

Apollo 11 was the spaceflight that landed the first two humans, who were Americans, on the Moon. Mission commander Neil Armstrong and pilot Buzz Aldrin landed the lunar module Eagle on July 20, 1969, at 20:18 UTC. Armstrong became the first to step onto the lunar surface six hours later on July 21 at 02:56:15 UTC; Aldrin joined him about 20 minutes later. They spent about two and a quarter hours together outside the spacecraft, and collected 47.5 pounds (21.5 kg) of lunar material to bring back to Earth. Michael Collins piloted the command module Columbia alone in lunar orbit...

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The Deepest Trench in the Deepest Ocean

The Mariana Trench stretches 2,500 kilometers (1,500 miles) in an arc that is edged by islands such as Guam and Saipan. It is the deepest trench in the world’s deepest ocean, and now scientists have a new map of it. Using sound waves, scientists have pierced the lightless depths of the western Pacific Ocean and drawn a new picture of the Mariana Trench. Its depths (nearly 11,000 m)easily dwarf the tallest mountains on Earth’s surface and pressures exceed 1,000 atmospheres, or 1,000 times the air pressure at the land surface. The trench was formed (and is constantly remodeled) by...

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Aurora Borealis (Northern Lights)

Aurora (astronomy) – Coloured light in the night sky near the Earth’s magnetic poles, called aurora borealis (‘northern lights’) in the northern hemisphere and aurora australis (‘southern lights’) in the southern hemisphere. Although auroras are usually restricted to the polar skies, fluctuations in the solar wind occasionally cause them to be visible at lower latitudes. An aurora is usually in the form of a luminous arch with its apex towards the magnetic pole, followed by arcs, bands, rays, curtains, and coronae, usually green but often showing shades of blue and red, and sometimes yellow or white. Auroras are caused...

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Mona Lisa in Original Colors

Digital Restoration of Leonardo Da Vinci’s Mona Lisa Mona Lisa: The Masterpiece’s Original Brilliance Revealed The astonishing brilliance of color and subtlety of modeling in Leonardo da Vinci’s Mona Lisa has been revealed by a remarkable combination of art and science. Sophisticated computer imaging, application of color filters and tonal adjustments were applied in this completely original digital restoration by the author to reproduce the appearance of the original work of art in Leonardo’s time. Mona Lisa in present condition The digital restoration here is based on a comprehensive study of Renaissance-painting techniques and materials, and comparative adaptation to...

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