The nearly 10-foot-tall telescope has already circled the southern hemisphere four times on a football stadium-sized balloon made from polyethylene film.
, relying on their large mirrors and positions outside Earth’s turbulent atmosphere to obtain pristine views of extremely distant celestial objects. But developing a space telescope and launching it on a powerful rocket is expensive. Lofting Hubble into orbit cost around $1.5 billion, for instance, andSuperBIT took just $5 million to launch—a price cut stemming from the relative cheapness of balloons versus rockets and the lower barrier of entry for skilled workers to build the system.
Superpressure balloons keep the lifting gas, typically helium, pressurized inside a main envelope so that volume and buoyancy remain constant across day and night. The balloon then uses a smaller balloon—a ballonet—inside or beneath the main envelope as a ballast, filling or emptying the pocket of compressed air to change altitude and effectively steer the ship.
. “We know this through the gravitational influence that it has on the usual matter—stars and gas, and the like—that we can see,” which make up around 5 percent of the universe, Jones explains., another largely mysterious material not to be confused with dark matter. Whereas the gravity of dark matter may help pull galaxies together and structure the way they populate the cosmos, dark energy may be responsible for the accelerating expansion of the entire universe.
The Antennae galaxies, cataloged as NGC 4038 and NGC 4039, are two large galaxies colliding 60 million light-years away toward the southerly constellation Corvus. The galaxies have previously been captured by the Hubble Space Telescope, Chandra X-ray Observatory, and now-retired Spitzer Space Telescope.Like Hubble, SuperBIT sees light in the visible to ultraviolet range, or 300- to 1,000-nanometer wavelengths.
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