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" ... Don’t Look Up tells the story of two low-level astronomers, who must go on a giant media tour to warn mankind of an approaching comet that will destroy planet earth. ... "
" ... Illustration of Oumuamua. In 2017, astronomers discovered an object in the Solar System which seemed ... [+] out of place. Its orbit is highly hyperbolic, not parabolic, which implies it originated outside of the Solar System and is just passing through. The interloper has been named Oumuamua Hawaiian for scout or messenger. Follow-up observations have revealed that Oumuamua is very oddly shaped, like a cigar, more elongated than any known Solar System object. Estimates put its size at 200 x 30 x 30 m, and its rotational period at 8.14 hours. An alternative possibility, however unlikely, has been mentioned in a scientific paper - that the object might actually be an alien spacecraft such as a solar sail (left). ... "
" ... Of all the methods astronomers use in the cosmic distance ladder, parallax is the most accurate. As we measure the parallax of more distant objects, we gain a greater understanding of the cosmos' scale. While most parallax measurements are of stars, parallax can also be measured for other objects. Recently a team measured the distance to a magnetar. ... "
" ... They find that C1-23152’s stars have a metal content that is even higher than our own Sun. That, in itself, is surprising, since what astronomers call metals (any element heavier than helium) are only formed in a second generation of stars. This means that this particular elliptical galaxy must have contained a significant number of so-called Population III stars, the first stars to form in the cosmos. But such Population III stars are thought to have burned out within the first 150 million years of their formation. ... "
" ... We can choose to think about the Universe the same way astronomers do: to note that the sky, no matter how far back we look, always has the same number of square degrees to cover it. The physical sizes that such an angular scale corresponds to, however, will change with distance. ... "