2021年01月26日 Central NGC 1316: After Galaxies Collide Image Credit: NASA, ESA, Hubble; Processing & Copyright: Daniel Nobre Explanation: How did this strange-looking galaxy form? Astronomers turn detectives when trying to figure out the cause of unusual jumbles of stars, gas, and dust like NGC 1 […]
2020年8月16日 NGC 6814: Grand Design Spiral Galaxy from Hubble Image Credit: ESA/Hubble & NASA; Acknowledgement: Judy Schmidt Explanation: In the center of this serene stellar swirl is likely a harrowing black-hole beast. The surrounding swirl sweeps around billions of stars which are highlighted
2020 May 18 Journey into the Cosmic Reef Video Credit: NASA’s GSFC, SVS; Lead Producer & Music: Joseph DePasquale (STScI) Explanation: What would you see if you could fly into the Cosmic Reef? The nebular cloud NGC 2014 appear to some like an ocean reef that resides in the sky, specifical
2020 May 10 The Porpoise Galaxy from Hubble Image Credit: NASA, ESA, Hubble, HLA; Reprocessing & Copyright: Raul Villaverde Explanation: What’s happening to this spiral galaxy? Just a few hundred million years ago, NGC 2936, the upper of the two large galaxies shown, was likely a normal s
2020 April 26 Edwin Hubble Discovers the Universe Image Credit & Copyright: Courtesy Carnegie Institution for Science Explanation: How big is our universe? This very question, among others, was debated by two leading astronomers 100 years ago today in what has become known as astronomy’s
十几年以来，两种测量宇宙膨胀速率的关键技术并没有得到一致的结论。通过使用NASA的哈勃太空望远镜，天文学家表示，他们在揭示这种不一致的途中已经越过了一个重要的门槛。最近的研究结果表明，可能需要新理论来解释塑造宇宙的力。 简要回顾：宇宙每时每刻都在膨胀。星系之间的空间正在延伸，就像烤箱里的面团一样。但宇宙的扩张速度有多快？当哈勃望远镜和其他望远镜试图回答这个问题时，它们的观测和科学家的预测出现了一个有趣的差异。 根据宇宙130亿年前的样子，哈勃测量值表明现代宇宙的膨胀率比预期更快。这些早期宇宙的测量数据来自欧洲航天局（ESA）的普朗克卫星（Planck satellite）。这种矛盾已在过去几年
