2017年7月28日 · In the clouds of swirling gas that produce stars and planets, dust serves as a wingman for hydrogen. As a cloud condenses under its own gravity, star formation begins …

2022年10月6日 · One of the more unsettling discoveries in the past half a century is that the universe is not locally real. In this context, “real” means that objects have definite properties …

2024年12月28日 · For centuries, humanity has grappled with the question: Is the universe infinite? Recent scientific advancements and observations suggest that the cosmos might …

2022年12月21日 · The James Webb Space Telescope uses infrared light to peer through interstellar dust, revealing a universe that even scientists find overwhelming: “It just takes your …

Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2025 March 28 Lunar Dust and Duct Tape …

In physical cosmology, the shape of the universe refers to both its local and global geometry. Local geometry is defined primarily by its curvature, while the global geometry is characterised …

What is the universe made of? How did it begin? How has it evolved over the 13.8 billion years since its origin? And how will it end? These are the questions addressed by cosmology, the …

2025年4月1日 · Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Concentrations of matter with gravity so powerful not even light can …

2021年12月7日 · Clouds of dust and gas hide the center of the Milky Way from optical telescopes. The word dust comes up often in descriptions of galaxies and elsewhere. What is the nature of …

2025年3月29日 · The shape of the universe plays a crucial role in determining whether the universe is infinite. According to general relativity, the curvature of space is determined by the …