Chandra's unusual orbit was achieved after deployment by a built-in propulsion system which boosted the observatory to a high Earth orbit.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 its closest approach to the Earth of 9,942 miles.
This light, however, is only one type of electromagnetic radiation.
Electromagnetic radiation comes in a range of energies, known as the electromagnetic spectrum.
There was Yoshiki, principal songwriter, brutalizing percussionist and virtuosic pianist of X Japan, standing on his drum throne, casting a shadow that was, via the jumbotron behind him, framed with fluttering, demonic wings, like the final boss in a video game.
The technical exactitude that allowed that moment to happen -- planning where and how the star would stand, and illustrating the projections to match it exactly -- were in full supply at the band's much-advertised return to New York at Madison Square Garden on Saturday (Oct. The song, which the band has performed live to sold out shows around the world over the years, has never before been released as a studio recording.
More In astronomy, distances are measured in units of light years, where one light year is the distance that light travels in a year10 trillion kilometers.
For historical reasons having to do with measuring distances to nearby stars, professional astronomers use the unit of parsecs, with one parsec being equal to 3.26 light years.
Over the years these exceptional properties have made X-rays useful in many fields, such as medicine and research into the nature of the atom.
Eventually, X-rays were found to be another form of light.
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.
It marked a day when a metaphorical version of Korean mythology played out in real life on the Olympic stage.