Stars and Galaxies | NASA Jet Propulsion Laboratory (JPL)
2021年1月12日 · Our universe includes a variety of astonishing and sometimes bizarre objects. Massive black holes so powerful, they swallow nearby objects. Galaxies that merge into giant swirls. Enormous stars that eventually explode and become supernovas. Neutron stars — objects so dense, one tablespoon of their material would weigh about 1 billion tons on ...
NASA’s Webb Peers Into the Extreme Outer Galaxy
2024年9月12日 · The Saga of Stars The Webb imagery skims the surface of the Extreme Outer Galaxy and the Digel Clouds, and is just a starting point for the team. They intend to revisit this outpost in the Milky Way to find answers to a variety of current mysteries, including the relative abundance of stars of various masses within Extreme Outer Galaxy star ...
New Images From Euclid Mission Reveal Wide View of the Dark …
2024年5月23日 · Euclid’s large field of view captures the entirety of galaxy NGC 6744 and shows astronomers key areas of star formation. Forming stars is the main way by which galaxies grow and evolve, so these investigations are central to understanding why …
Why NASA’s SPHEREx Mission Will Make ‘Most Colorful’ Cosmic …
2024年10月31日 · Research indicates that most of the water in our galaxy is in the form of ice rather than gas, frozen to the surface of small dust grains. In dense clouds where stars form, these icy dust grains can become part of newly forming planets, with the potential to create oceans like the ones on Earth.
NASA Eyes Launching SPHEREx Sky-Mapping Mission in Early 2025
2024年12月9日 · About the size of a subcompact car, SPHEREx will enter a polar orbit around Earth and create a map of the entire sky in 3D, taking images in every direction, like scanning the inside of a globe. The map will contain hundreds of millions of stars and galaxies, showing them in 102 colors (each a different wavelength of light).
Astronomers Discover Massive Star Factory in Early Universe
2013年4月17日 · The newfound galaxy, called HFLS3, seems to defy this model, prodigiously producing stars when our universe was in its infancy. HFLS3 is about as massive as our Milky Way galaxy but produces stars at a rate 2,000 times greater. These stars are forming from interstellar gas remarkably rich in molecules such as carbon monoxide, ammonia and water.
NASA’s Webb Reveals Long-Studied Star Is Actually Twins
2024年6月13日 · WL 20 resides in a much larger, well-studied star-forming region of the Milky Way galaxy called Rho Ophiuchi, a massive cloud of gas and dust about 400 light-years from Earth. In fact, WL 20 is hidden behind thick clouds of gas and dust that block most of the visible light (wavelengths that the human eye can detect) from the stars there.
Baby Stars Finally Found in Jumbled Galactic Center
2009年6月10日 · Molecules around stars leave imprints in their light, which the spectrograph can detect. The results revealed three stars with clear signs of youth, for example, certain warm, dense gases. These youthful features are found in other places in the galaxy where stars are being formed. "It is amazing to me that we have found these stars," said Ramirez.
How Far Away is That Galaxy? Vast Catalog Has Answers
2017年1月5日 · Instead, astronomers rely on extremely bright objects, such as Type Ia supernovae and pulsating stars called Cepheids variables, as indicators of distance. To calculate how far away a distant galaxy is, scientists use known mathematical relationships between distance and other properties of objects, such as their total emitted energy.
360-Degree View of the Milky Way - NASA Jet Propulsion …
2014年3月24日 · In Spitzer's mosaic, light from stars throughout the galaxy -- which stretches 100,000 light-years across -- shines through. This picture covers only about three percent of the sky, but includes more than half of the galaxy's stars and the majority of its star formation activity. The red color shows dusty areas of star formation.