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A black star is created when matter compresses at a rate significantly less than the free fall velocity of a hypothetical particle falling to the center of its star. Quantum processes create vacuum polarization , producing a form of degeneracy pressure preventing spacetime (and the particles held within it) from occupying the same space at the ...
1990 – FIRAS on the Cosmic Background Explorer (COBE) satellite measures the black body form of the CMB spectrum with exquisite precision, and shows that the microwave background has a nearly perfect black-body spectrum with T = 2.73 K and thereby strongly constrains the density of the intergalactic medium.
Black Star (cider), a brand of cider produced by Brookfield Drinks; Black Star (fragrance), a perfume by Avril Lavigne; Black Star (photo agency), a New York-based photo agency founded in 1935; Black Star Canyon, an area in Orange County California; Black Star Line, a shipping line created by Marcus Garvey to repatriate African-Americans to Africa
Temperature of the cosmic background radiation spectrum based on COBE data: uncorrected (top); corrected for the dipole term due to our peculiar velocity (middle); corrected additionally for contributions from our galaxy (bottom). Cosmic background radiation is electromagnetic radiation that fills all space.
SMSS J215728.21-360215.1, commonly known as J2157-3602, is one of the fastest growing black holes and one of the most powerful quasars known to exist as of 2021.The quasar is located at redshift 4.75, [1] corresponding to a comoving distance of 2.5 × 10 10 ly from Earth and to a light-travel distance of 1.25 × 10 10 ly.
Pop star Rita Ora is also expected to perform just after midnight EST on "Dick Clark's New Year's Rockin' Eve," according to an ABC spokesperson. Ora is expected to perform a medley of her hit ...
While in a non-rotating black hole the singularity occurs at a single point in the model coordinates, called a "point singularity", in a rotating black hole, also known as a Kerr black hole, the singularity occurs on a ring (a circular line), known as a "ring singularity". Such a singularity may also theoretically become a wormhole. [18]
This full-sized R2-D2 droid, assembled from parts used in the “Star Wars” films, sold for a whopping $2.75 million in 2017. Standing at 43 inches tall, the droid became one of the most ...