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The best gift in the galaxy: an astronomer s guide to buying a home telescope

Shutterstock Since time immemorial, humans have been fascinated by the night sky. Our relationship with it was forever changed in the early 1600s, when Galileo Galilei raised a small hand-held telescope to the sky and became the first person to see Jupiter’s moons and Saturn’s rings. Optical telescopes today range from pocket telescopes just a few inches long, to the colossal Thirty Meter Telescope being built in Hawaii (which will weigh more than 1,400 tonnes). There are even bigger arrays of telescopes that observe in radio wavelengths, such as the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope. Read more:

You ve Never Seen The Moon Like This Before, But It s a Real Image

You ve Never Seen The Moon Like This Before, But It s a Real Image 11 DECEMBER 2020 Blue Moon. Strawberry Moon. Supermoon. Snow Moon. Blood Moon. Earth s favourite satellite buddy has a name for every occasion. Yet the most glorious view of the full Moon we ve seen to date has no name.   That s probably because it s not indicative of an occasion, but a way of looking at our satellite. With your naked eyes, you would never see the rainbowy, soap-bubble-like view of the Moon as pictured above. But that s what it looks like to the Australian Square Kilometre Array Pathfinder (ASKAP), an incredibly powerful radio telescope array located in the desert of Western Australia.

Violent space weather could limit life on nearby exoplanets

Violent space weather could limit life on nearby exoplanets Paola Rosa-Aquino © Provided by Popular Science Artist s impression of flare from our neighboring star Proxima Centauri ejecting material onto a nearby planet. Earth regularly endures highly charged belches from our Sun, sometimes even prompting a dancing curtain of ever-changing color known as aurora. But could similar violent eruptions in other solar systems make far-off worlds inhospitable to life? Earlier this year, astronomers confirmed there were two Earth-like planets orbiting the cool, faint red dwarf Proxima Centauri the closest star to our sun at 4.2 light-years away. One of them, Proxima Centauri b, is in its star’s habitable zone where temperatures might allow liquid water to exist on its surface.

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