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Tag Archives: astronomers

The Universe's Fate Rests on the Hubble Constant – Which Has So Far Eluded Astronomers

A precise measurement of the Hubble constant, the value that describes how fast the universe is expanding, has elated scientists for decades. Pinning this number down would be a long-simmering dispute among astronomers to bring home to the evolution and fate of the universe. Until now astronomers have taken two approaches to reckoning the constant's value. One method uses objects …

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Amateur astronomers detect meteorite impact during the lunar eclipse

According to ancient astronaut theorists, the lunar eclipse had an unexpected visitor this weekend. Around the time of totality a meteor collapsed with the moon and was visible from the earth. Meteors are constantly bumping into the earth and the moon, although this is normally either over the ocean (70% of the earth) where we can not see it on …

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Astronomers use sub-images of quasars to create a new estimate of the Hubble constant

Image of a Hubble space telescope of a double-mapped quasar. Picture credits: NASA Hubble Space Telescope, Tommaso Treu / UCLA and Birrer et al The question of how fast the universe expands has been bothering astronomers for almost a century. Different studies provide different answers over and over again – some researchers wonder if they have overlooked a key mechanism …

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No need for Planet Nine? Astronomers say an invisible pane of icy space might explain things

Some astronomers have suspected for years that a planet is out of Neptune's orbit in the vastness of our solar system – a mysterious, giant planet called "Planet Nine." This theory is based on the strange orbital motions of the small, distant world worlds, which behave like an invisible object, influence their movements. Now, a group of researchers have found …

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Russia wants to bring billboards into space. Astronomers do not like it. Russia wants to bring billboards into space. Astronomers do not like it.

As if we were not already surrounded by enough advertising that flashes on television, drives on trucks, plays in Times Square and speaks on the radio, then the Russian company StartRocket wants to bring them into space. For real. StartRocket would like to use Cubesats to plaster the night sky with advertisements that could float from 2021 onwards. Astronomers do …

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Astronomers have discovered how supermassive black holes are getting so big

Absolute Unit At the center of our Milky Way is a supermassive black hole several million times more massive than our Sun. Until recently, scientists were not sure how these gigantic black holes got to these ridiculous features proportions. By and large, astronomers assumed that they did so by feeding on their habitual cosmic diets of wayward stars and other …

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Catastrophic collision to hit our galaxy earlier than expected is appreciated by astronomers – CBS Philly

The Great Magellanic Cloud will catastrophically collide with the Milky Way in two billion years, according to a study published this month in the Monthly Notices of the Royal Astronomical Society. The effects that they believe are long overdue have the potential to cause our solar system to "fly through space." Our galaxy is orbited by smaller satellite galaxies, the …

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