Asteroids help scientists to measure the diameters of faraway stars

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Using the unique capabilities of telescopes specialized on cosmic gamma rays, scientists have measured the smallest apparent size of a star on the night sky to date. The measurements reveal the diameters of a giant star 2,674 light-years away and of a sun-like star at a distance of 700 light-years.
via Science Daily
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Asteroids help scientists measure distant stars

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We gaze up at them, we wish upon them, we even sing about swinging on them. But the one thing we haven't been able to do with a star is figure out how big it is...until now.
via Science Daily
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Astronomers take first, high-resolution look at huge star-forming region of Milky Way

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A team of astronomers used a newly commissioned radio telescope in South Korea to make the first high-resolution observations of the molecular clouds within a star-forming region of the Milky Way. The first good look at the galactic region indicated large molecular clouds about 180 light years across with a mass equal to about 100,000 masses of our sun.
via Science Daily
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TESS finds its first Earth-sized planet

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A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world. This milestone sets the path for finding smaller planets around even smaller stars, and those planets may potentially be habitable.
via Science Daily
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Tiny fragment of a comet found inside a meteorite

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Astronomers have made a surprising discovery that gives clues to how solar system formed.
via Science Daily
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Meteoroid strikes eject precious water from moon

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Streams of meteoroids striking the Moon infuse the thin lunar atmosphere with a short-lived water vapor, according to researchers using data from NASA's LADEE spacecraft. The findings will help scientists understand the history of lunar water.
via Science Daily
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Travel through wormholes is possible, but slow

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A physicist has shown that wormholes can exist: tunnels in curved space-time, connecting two distant places, through which travel is possible. But don't pack your bags for a trip to other side of the galaxy yet; although it's theoretically possible, it's not useful for humans to travel through, said the author of the study.
via Science Daily
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