A new theory based on controversial new calculations says that black holes may not exist, or least not as scientists imagine. It eliminates the existence of the "event horizon" and claims to have solved a paradox in astrophysics.Current models say that black holes are space objects which have an immense gravitationa...
No telescope can form a perfect image. Even if a reflecting telescope could have a perfect mirror, or a refracting telescope could have a perfect lens, the effects of aperture diffraction could still not be escaped.The blurring effect from the atmosphere is among the most important distortions that affect telescopes...
The history of aviation, though short (only a bit more than a century) has known the greatest advances in terms of design technology, building materials and performances of civilian and military aircraft. The first planes were made of wood, cardboard and cloth, now they are built using the latest development in arti...
Sunita Williams is now officially holding the record for the longest duration spaceflight for a woman. This morning, she broke the old record, held by Shannon Lucid and established 11 years ago, of 188 days and 4 hours. Sunita Lyn "Suni" Williams was assigned to the International Space Station as a member of Expedit...
In physics, time and space are considered fundamental and can not be defined in other terms. Periodic events and periodic motion, like the apparent motion of the sun across the sky, the phases of the moon, the swing of a pendulum, heartbeats, have long served as standards for units of time.Spacetime is a notion that...
Today, the space shuttle Atlantis has undocked from the International Space Station and began the journey home, after delivering to the ISS new solar power wings and a fresh crew member. NASA is happy with the fact that the repairs to the space station went well and that the crisis of the main control computers is f...
Lenses are used to converge or diverge light in various optical and electronic devices and the first written records of the use of a lens date to Ancient Greece, in 424 BC. The optical zoom lenses in professional television cameras can have a magnification ratio as high as 100x.A group of scientists claim to have cr...
Yesterday, the space shuttle Atlantis undocked from the International Space Station and began the journey home, after delivering to the ISS new solar power wings and a fresh crew member. The problem is that, for now, thunderstorms and low clouds are threatening to prevent it from landing.The shuttle already missed t...
Samba and Tango are the names of two of ESA's four satellites in the Cluster mission that are now orbiting in formation, separated by only 17 km, the closest two ESA satellites have ever been. It is hoped that this tight formation will allow new scientific discoveries about the Sun and the solar wind.The Cluste...
Orion is a spacecraft design currently being developed by the National Aeronautics and Space Administration (NASA). Each spacecraft of this type will be able to carry a crew of four to six astronauts and will be launched by the new Ares I launch vehicle. It is part of Project Constellation, the pride of NASA's ...
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