مقالاتي

شموع2

شموع2

Advertisements

Picture of the day for January 21, 2018

Engineers successfully tested the parachutes for NASA’s Orion spacecraft at the U.S. Army Yuma Proving Ground in Arizona Wednesday, March 8, 2017. This was the second test in a series of eight that will certify Orion’s parachutes for human spaceflight. The test, which dropped an Orion engineering model from a C-17 aircraft at 25,000 feet, simulated the descent astronauts might experience if they have to abort a mission after liftoff.. Learn more.

Picture of the day for January 18, 2018

Young European bison (Bison bonasus) in the Wisentgehege Springe game park near Springe, Hanover, Germany. The European bison or wisent is the heaviest of the surviving land animals in Europe, with males growing to around 1,000 kg (2,200 lb). European bison were hunted to extinction in the wild, but have since been reintroduced from captivity into several countries.. Learn more.