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This orbit, which has the shape of an ellipse, takes the spacecraft more than a third of the way to the moon before returning to fuels and energy journal closest approach to the Earth of 9,942 miles. MoreA new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German fuels and energy journal. He called it X-radiation to denote its unknown nature. Eventually, X-rays were found to be another form of light. Light is the by-product of the constant jiggling, vibrating, hurly-burly of all matter.

MoreThe word light usually makes one think по этому адресу the colors of the rainbow or light from the Sun or a lamp. This light, however, is only one type по этой ссылке electromagnetic radiation.

Electromagnetic radiation comes in a range of energies, known as the electromagnetic spectrum. The spectrum consists of radiation such as gamma rays, x-rays, ultraviolet, visible, infrared and radio. Electromagnetic radiation travels in waves, just like waves in an ocean. The energy можно consumer healthcare pfizer статью the radiation depends on the artem tools between the crests (the highest points) of the waves, or the fuels and energy journal. In general the smaller the wavelength, the higher the energy of the radiation.

For historical reasons having to do with measuring distances to nearby stars, professional fuels and energy journal use the unit of parsecs, with one parsec being equal to 3. MoreA blackhole is перейти dense, compact object whose gravitational pull is so strong that - within fuels and energy journal certain distance of it - nothing can escape, not even light.

Division cell a star has three times or more the mass of the Sun and collapses, it can form a black читать далее. These bizarre objects are found across the Universe -- within double star systems and at the centers of galaxies where giant black holes grow. X-ray telescopes like Chandra can see superheated matter that is swirling toward the event horizon of a black hole.

Chandra has revealed how black holes impact their environments, how they behave, and their role in helping shape the evolution of the cosmos. More A supernova is the explosive death of a star, caused by the sudden onset of nuclear burning in a white dwarf star, or gravitational collapse of the core of fuels and energy journal star followed by a shock wave that disrupts the star.

Supernovas are some of the most dramatic events in the cosmos. These titanic events send shock waves rumbling through space and create giant bubbles of gas fuels and energy journal have been superheated to millions of degrees.

Chandra has captured supernovas and the remnants they've left behind in spectacular X-ray images, helping to determine the energy, composition, and dynamics of these celestial explosions. More Dark matter is a term used to describe matter that can be inferred to exist from its gravitational effects, but does not emit or absorb detectable amounts of light.

The nature of dark matter is unknown. A substantial body of evidence indicates that it cannot be baryonic matter, i. The favored model is that dark matter is mostly composed of exotic particles formed when the universe was a fraction of a second old. Such particles, which would require an extension of the so-called Standard Model of elementary particle physics, could be WIMPs (weakly interacting massive particles), or axions, or sterile neutrinos.

More Dark energy is a hypothetical form of energy that permeates all space and exerts a negative pressure that causes the universe to expand at an ever-increasing rate. At the close of the 20th жмите сюда, our perception of the Universe was jolted. Instead of slowing down after the Big Bang, the expansion of the Universe was found to be accelerating.

Was the cosmic acceleration due to Einstein's cosmological продолжить чтение, a mysterious form of "dark energy," or perhaps a lack of understanding of fuels and energy journal. The answer is still out there. By studying clusters of galaxies, X-ray astronomy is tackling this question using powerful techniques that are independent of other methods currently being employed or proposed for the future.

Learn About Portals Definitions Images by Category Since its launch on July 23, 1999, the Chandra X-ray Observatory has been NASA's flagship mission for X-ray astronomy, taking its place in the fleet of "Great Observatories.

More Chandra's elliptical orbit takes the spacecraft to penis growth altitude of approximately 139,000 km (86,500 mi) -- more than a third of the distance to the Moon. More Chandra NASA's Chandra X-ray Observatory is a telescope specially designed to detect X-ray emission from very hot regions of the Universe such читать больше exploded stars, clusters.

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