The Give and Take of Mega-Flares From Stars - NASA
2021年6月16日 · Over the past two decades, scientists have argued that these giant flares can help “give” planets to still-forming stars by driving gas away from disks of material that surround them. This can trigger the formation of pebbles and other small rocky material that is a crucial step for planets to form.
The give and take of mega-flares from stars | ScienceDaily
2021年6月16日 · By conducting the largest survey ever of star-forming regions in X-rays, a team of researchers has helped outline the link between very powerful flares, or outbursts, from youthful stars, and...
The Cosmic Megaflares That Could Hit Earth | How The Universe Works
The universe is a magnetic minefield. Our own Sun spits out spectacular flares, capable of battering life on Earth. But out there in deep space lie the true ...
The give and take of mega-flares from stars - Phys.org
2021年6月16日 · By conducting the largest survey ever of star-forming regions in X-rays, a team of researchers has helped outline the link between very powerful flares, or outbursts, from youthful stars, and...
How Do Superflares Get So Powerful? - Universe Today
2023年12月12日 · We live with a star that sends out flares powerful enough to disrupt things here on Earth. Telecommunications, power grids, even life itself, are affected by strong solar activity. But, the...
Stars - NASA Science
Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun. Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements.
Proxima Centauri shoots out humongous flare, with big …
2021年4月25日 · Scientists have detected the largest stellar flare ever recorded from Proxima Centauri. The finding changes what we know about stellar flares and the potential for alien life around red dwarfs...
Cosmology | Center for Astrophysics | Harvard & Smithsonian
The universe is expanding, carrying galaxies with it like flotsam on a fast-flowing river. This expansion also stretches the wavelength of light, which astronomers call cosmological redshift, since it pushes visible light colors toward the red end of the spectrum.
Active Galaxies Flare and Fade in Fermi Telescope All-Sky Movie
2009年4月3日 · The gamma-ray sky comes alive in a movie made from data acquired by NASA’s Fermi Gamma-ray Space Telescope during its first three months of operations. Gamma rays from sources near and far turn the sky into a hypnotic froth. The sun arcs serenely across the northern sky as active galaxies called blazars flare up and fade out.
How does the universe work? - Science@NASA
Since the early 20th century, scientists have known that the universe is expanding. In the 1990s, researchers discovered that, surprisingly, the expansion is accelerating. This was an astonishing discovery for the astrophysics community since the universe should be …
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