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Secrets of Space

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Did You Know the Earth Has a Second Magnetic Field? Its Oceans

Earth’s magnetic field is one of the most mysterious features of our planet. It is also essential to life as we know it, ensuring that our atmosphere is not stripped away by solar wind and shielding life on Earth from harmful radiation. For some time, scientists have theorized that it is the result of a dynamo action in our core, where the liquid outer core revolves around the solid inner core and in the opposite direction of the Earth’s rotation.

Musk Says that SpaceX will use a Giant Party Balloon to Bring an Upper Stage Back. Wait, what?

When Elon Musk of SpaceX tweets something interesting, it generates a wave of excitement. So when he tweeted recently that SpaceX might be working on a way to retrieve upper stages of their rockets, it set off a chain of intrigued responses. SpaceX will try to bring rocket upper stage back from orbital velocity using a giant party balloon — Elon Musk (@elonmusk) April 15, 2018 SpaceX has been retrieving and reusing their lower stages for some time now, and it’s lowered the cost of launching payloads into space

Could We Detect an Ancient Industrial Civilization in the Geological Record?

As a species, we humans tend to take it for granted that we are the only ones that live in sedentary communities, use tools, and alter our landscape to meet our needs. It is also a foregone conclusion that in the history of planet Earth, humans are the only species to develop machinery, automation, electricity, and mass communications – the hallmarks of industrial civilization. But what if another industrial civilization existed on Earth millions of years ago?

See The Finest Sights Before You Die With “Wonders of the Night Sky”

Framed by stars reflected by water, a kayaker leans back to take in the grandeur of the night sky. The photo appears in my new book in the chapter titled “Stars on Water.” Credit: Bob King After months parked in front of a computer, I’m thrilled to announce the publication of my new book. The full title is — get ready for this — Wonders of the Night Sky You Must See Before You Die: The Guide to Extraordinary Curiosities of Our Universe

Dense Star Clusters Could be the Places Where Black Hole Mergers are Common

In February of 2016 , scientists working for the Laser Interferometer Gravitational-Wave Observatory (LIGO) made history when they announced the first-ever detection of gravitational waves . Not only did this discovery confirm a century-old prediction made by Einstein’s Theory of General Relativity , it also confirmed the existence of stellar binary black holes – which merged to produce the signal in the first place

Carnival of Space #556

This week’s Carnival of Space is hosted by Brian Wang at his  Next Big Future blog. Click here to read Carnival of Space #556 And if you’re interested in looking back, here’s an  archive to all the past Carnivals of Space . If you’ve got a space-related blog, you should really join the carnival.

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