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CERN’s HiRadMat facility restarts this week with a new experiment nicknamed “Fireball”, which will give new insights into extreme astrophysical phenomena such as gamma-ray bursts.
New black hole images reveal a glowing, fluffy ring and a high-speed jet（图）
黑洞图像 高速喷气机 等离子体物理学
2023/6/9
In 2017, astronomers captured the first image of a black hole by coordinating radio dishes around the world to act as a single, planet-sized telescope. The synchronized network, known collectively as ...
For most people, the night sky conjures a sense of stillness, an occasional shooting star the only visible movement. A conversation with Rishabh Datta, however, unveils the supersonic drama crashing a...
New findings reveal the most detailed mass map of dark matter（图）
Astronomy Physics Research
2023/6/29
For millennia, humans have been fascinated by the mysteries of the cosmos. From ancient civilizations such as the Babylonians, Greeks, and Egyptians to modern-day astronomers, the allure of the starry...
The Big Bang at 75（图）
Physics Philosophy 天体物理学
2023/6/29
There was a time before time when the universe was tiny, dense, and hot. In this world, time didn’t even exist. Space didn’t exist. That’s what current theories about the Big Bang posit, says Vijay Ba...
Detected in 2017 and observable for only a few weeks, the first known interstellar object to pass through the solar system confounded astronomers, sparking speculation it could be a giant snowflake, h...
Study: Without more data, a black hole’s origins can be “spun” in any direction（图）
黑洞 双星系统 黑洞起源
2023/6/9
Clues to a black hole’s origins can be found in the way it spins. This is especially true for binaries, in which two black holes circle close together before merging. The spin and tilt of the respecti...
Scientists know that dark matter exists because although we can’t see it, we can see the effects of what it does in the world, sort of like a ghost bumping around a haunted house. And we’re not sure w...
Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find...
When we look out into space, all of the astrophysical objects that we see are embedded in magnetic fields. This is true not only in the neighborhood of stars and planets, but also in the deep space be...
‘The dawn of a new era in astronomy’（图）
天文学 银河系 黑洞
2023/6/21
Not long ago, the idea of photographing a black hole was as quixotic as photographing a unicorn. Now, scientists have not one but two images of two different supermassive black holes — and they both l...
Astronomers snap first-ever image of supermassive black hole Sagittarius A*（图）
超大质量黑洞 人马座A* 银河系
2023/6/9
Black holes are invisible by nature. Their pull is inescapable, forever trapping any light that falls into their gravitational abyss. But just beyond a black hole’s point of no return, light persists,...
Astronomers discover a rare “black widow” binary, with the shortest orbit yet（图）
“黑寡妇”双星 恒星 伴星环 银河系
2023/6/9
The flashing of a nearby star has drawn MIT astronomers to a new and mysterious system 3,000 light years from Earth. The stellar oddity appears to be a new “black widow binary” — a rapidly spinning ne...
Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
Research done at Cornell has uncovered from gravitation wave data the first potential signs of spin-orbit resonances in binary black holes, a step toward understanding the mechanisms of supernovas and...