2023-12-16 13:48:16时空
太阳活动可能在明年达到峰值

Researchers at the Center of Excellence in Space Sciences India at IISER Kolkata have discovered a new relationship between the Sun's magnetic field and its sunspot cycle, that can help predict when the peak in solar activity will occur. Their work indic

阅读全文
2023-12-16 13:48:15时空
伽马射线脉冲星的里程碑激发了创新的天体物理学和应用

The U.S. Naval Research Laboratory (NRL), in conjunction with the international Fermi Large Area Telescope Collaboration, announce the discovery of nearly 300 gamma ray pulsars in the publication of their Third Catalog of Gamma Ray Pulsars. This milestone

阅读全文
2023-12-16 13:48:13时空
小行星Phaethon的组成

The asteroid that causes the Geminid shooting star swarm has also puzzled researchers with its comet-like tail. The infrared spectrum of rare meteorites helped to determine the composition of the asteroid.

阅读全文
2023-12-16 13:48:11时空
天文学家在另一个星系发现恒星周围的圆盘

In a remarkable discovery, astronomers have found a disc around a young star in the Large Magellanic Cloud, a galaxy neighbouring ours. It's the first time such a disc, identical to those forming planets in our own Milky Way, has ever been found outside

阅读全文
2023-12-16 13:48:08时空
新的天体物理学模型揭示了长伽马射线暴的额外来源

Cutting-edge computer simulations combined with theoretical calculations are helping astronomers better understand the origin of some of the universe's most energetic and mysterious light shows -- gamma-ray bursts, or GRBs. The new unified model confirms

阅读全文
2023-12-16 13:48:06时空
生命的基石可能在新的恒星和行星附近形成

While life on Earth is relatively new, geologically speaking, the ingredients that combined to form it might be much older than once thought. According to research published in ACS Central Science, the simplest amino acid, carbamic acid, could ha

阅读全文
2023-12-16 13:48:03时空
岩石行星可以在极端环境中形成

An international team of astronomers has used NASA's James Webb Space Telescope to provide the first observation of water and other molecules in the highly irradiated inner, rocky-planet-forming regions of a disk in one of the most extreme environments i

阅读全文
2023-12-16 13:48:00时空
陨石可能是早期地球氮的来源

Micrometeorites originating from icy celestial bodies in the outer Solar System may be responsible for transporting nitrogen to the near-Earth region in the early days of our solar system. That discovery was published today in Nature Astronomy by

阅读全文
2023-12-16 13:47:58时空
量化的历史上最大的磁暴之一:极光覆盖了从热带到极地的大部分夜空

In early November of this year, aurora borealis were observed at surprisingly low latitudes, as far south as Italy and Texas. Such phenomena indicate the impacts of a solar coronal mass ejection on the Earth's magnetic field and atmosphere. Far more dram

阅读全文
2023-12-16 13:47:55时空
哈勃张力的一种新的可能解释

The universe is expanding. How fast it does so is described by the so-called Hubble-Lemaitre constant. But there is a dispute about how big this constant actually is: Different measurement methods provide contradictory values. This so-called "Hubble tens

阅读全文
2023-12-16 13:47:52时空
詹姆斯·韦伯太空望远镜图像中再现幽灵般的尘封星系

It first appeared as a glowing blob from ground-based telescopes and then vanished completely in images from the Hubble Space Telescope. Now, the ghostly object has reappeared as a faint, yet distinct galaxy in an image from the James Webb Space Telescope

阅读全文
2023-12-16 13:47:49时空
韦布望远镜的发现解释了被称为“砖块”的暗星系区

In a recent study led by University of Florida astronomer Adam Ginsburg, groundbreaking findings shed light on a mysterious dark region at the center of the Milky Way. The turbulent gas cloud, playfully nicknamed "The Brick" due to its opacity, has spar

阅读全文
 322   首页 上一页 19 20 21 22 23 24 25 26 27 下一页 尾页