Using the Hubble Space Telescope, a team of astronomers recently imaged the most distant star ever seen in a distant galaxy cluster
The post The Most Distant Star Ever Seen, Only 4.4 Billion Years After the Big Bang appeared first on Universe Today.
According to a new report from the Government Accountability Office, the launch of the James Webb Space Telescope is likely to be delayed again, and exceed its cost cap.
The post James Webb Telescope is Probably Going to be Delayed Again, and Could Exceed a Congress Spending Cap appeared first on Universe Today.
An international team of astronomers, using multiple observatories, have found the youngest and most distant quasar to date.
The post Too Big, Too Soon. Monster Black Hole Seen Shortly After the Big Bang appeared first on Universe Today.
In about 4 billion years, scientists estimate that the Andromeda and the Milky Way galaxies are expected to collide, based on data from the Hubble Space Telescope. And when they merge, they will give rise to a super-galaxy that some are already calling…
Last week, astronomers at Yale University reported seeing something unusual: a seemingly stedfast beacon from the far reaches of the Universe went quiet. This relic light source, a quasar located in the region of our sky known as the celestial equator, unexpectedly became 6-7 times dimmer over the first decade of the 21st century. Thanks to this dramatic change in luminosity, astronomers now […]
We know dark matter exists. We know this because without it and dark energy, our Universe would be missing 95.4% of its mass. What’s more, scientists would be hard pressed to explain what accounts for the gravitational effects they routinely see at work in the cosmos. For decades, scientists have sought to prove its existence […]
On the largest scales, networks of gaseous filaments span hundreds of millions of light-years, connecting massive galaxy clusters. But this gas is so rarified, it’s impossible to see directly. For years, astronomers have used quasars — brilliant galactic centers fueled by supermassive black holes rapidly accreting material — to map the otherwise invisible matter. But […]
Astronomers have spotted, for the first time, a dense galactic core blazing with the light of millions of newborn stars in the early universe. The finding sheds light on how elliptical galaxies, the large, gas-poor gatherings of older stars, may have first formed in the early universe. It’s a question that has eluded astronomers for […]
Black holes one billion times the Sun’s mass or more lie at the heart of many galaxies, driving their evolution. Although common today, evidence of supermassive black holes existing since the infancy of the Universe, one billion years or so after the Big Bang, has puzzled astronomers for years. How could these giants have grown […]