Tag: universe

Galaxies have magnetic fields, too! Images here

Until recently, magnetic fields in the outskirts of galaxies were too faint to be detected. Although it’s still not clear what causes them or how they’re maintained, astronomers have started to create images of their observations of galaxies’ magnetic fields producing beautiful aurora-like effects. See them here. Source: https://earthsky.org/space/images-of-magnetic-fields-in-galaxies…

What is the Milky Way?

When someone says “Milky Way,” do you think of the starry pathway across our sky, or of the great pinwheel-shaped galaxy in space? Both are correct! Source: https://earthsky.org/astronomy-essentials/what-is-the-milky-way-galaxy…

Large proto-cluster of galaxies discovered in the midst of clearing the cosmic fog

When the universe was about 350 million years old it was dark: there were no stars or galaxies, only neutral gas—mainly hydrogen—the residue of the Big Bang. That foggy period began to clear as atoms clumped together to form the first stars and the first quasars, causing the gas to ionize and high-energy photons to travel freely through space. Source: https://phys.org/news/2021-02-large-proto-cluster-galaxies-midst-cosmic.html…

We heart the Earth and sky

This Valentine’s Day, we find so much to love in the many heart-shaped objects created by Mother Nature that can be found right here on Earth or all the way to the deepest reaches of the sky. Source: https://earthsky.org/space/heart-shaped-objects-in-nature-space-earth-valentines-day…

Happy birthday to Galileo, born February 15

One of our greatest astronomers, Galileo Galilei, was born February 15, 1564. His discoveries with the improved telescopes he made changed the way we view the universe – and got him in trouble with the church. Source: https://earthsky.org/human-world/galileos-birthday-feb-15-1564…

‘We Need to Inflict Pain’: Mark Zuckerberg’s War on Apple

When Tim Cook told an interviewer that Apple wouldn’t get in a Facebook-style data-collection controversy, “Mr. Zuckerberg shot back that Mr. Cook’s comments were ‘extremely glib’ and ‘not at all aligned with the truth,'” reports the Wall Street Journal. But “In private, Mr. Zuckerberg was even harsher. ‘We need to inflict pain,’ he told his team, for treating the company so…

Can you see Canopus, the 2nd-brightest star?

Here’s how to spot Canopus, the 2nd-brightest star in the sky as seen from Earth, on February evenings. Source: https://earthsky.org/brightest-stars/few-know-the-second-brightest-star-canopus…

A brief history: What we know so far about fast radio bursts across the universe

Fast radio bursts are one of the great mysteries of the universe. Since their discovery, we have learned a great deal about these intense millisecond-duration pulses. Source: https://phys.org/news/2021-02-history-fast-radio-universe.html…