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The Stingray Nebula (Hen 3-1357) is the youngest-known planetary nebula, having appeared in the 1980s. [2] The nebula is located in the direction of the southern constellation Ara (the Altar), and is located 18,000 light-years (5,600 parsecs) away. Although it is some 130 times the size of the Solar System, the Stingray Nebula is only about one ...
The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle used by NASA.As the primary launch vehicle of the Artemis Moon landing program, SLS is designed to launch the crewed Orion spacecraft on a trans-lunar trajectory.
The Saenger was a highly aerodynamic hypersonic aircraft, similar in size to a conventional Boeing 747 airliner, and capable of taking off like conventional aircraft. [4] As a conventional aircraft, it was projected to have been capable of cruising speeds of up to Mach 4.4 over a range of 11,000 kilometers while carrying around 230 passengers; this was more than double the speed, range, and ...
The related article "Comparison of orbital launch systems" lists each individual launcher system within any given launcher family, categorized by its current operational status. This article does not include suborbital launches (i.e. flights which were not intended to reach LEO or VLEO).
emission line nebula The size is likely larger. The paper only describes the maximal distance to the nucleus and not the entire size. nebula around the Teacup galaxy: 363,000 ly (111,000 pc) [18] ionized nebula part of the circumgalactic medium around the Teacup galaxy, illuminated by the AGN: Lyman-alpha blob 1: 300,000 ly (92,000 pc) [19] LαB
The nebula was formed about 70,000 years ago by the star EZ Canis Majoris throwing off its outer hydrogen layers, revealing inner layers of heavier elements. [2] Fast stellar winds, blowing at 1,700 km/s (3.8 million mph) from this star, create the bubble-shaped nebula as they sweep up slower moving material from an earlier phase of the star's evolution.
The National Launch System (or New Launch System) was a study authorized in 1991 by President George H. W. Bush to outline alternatives to the Space Shuttle for access to Earth orbit. [1] Shortly thereafter, NASA asked Lockheed Missiles and Space , McDonnell Douglas , and TRW to perform a ten-month study.
At launch, NASA had spent approximately US$4.7 billion in inflation-adjusted 2010 dollars on the project. [74] Hubble's cumulative costs are estimated to be about US$11.3 billion in 2015 dollars, which include all subsequent servicing costs, but not ongoing operations, making it the most expensive science mission in NASA history.