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Why We’re Trying To Colonize Space

This docu-series covers all three of Earth’s next landing options – Asteroids, the Moon and Mars. The programmes explore the scientific reasons for and against each celestial body’s case to be the next that humans might colonise. They explore the technical and logistical problems and benefits of each – EG temperature at night and day, ability or inability to harness solar power and more.

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Twin spacecraft mission reveals there might be a ‘hot’ side of the moon

The moon’s nearside (that is, the side facing Earth) is dark-colored and dominated by ancient lava flows, whereas the farside is more rugged—and NASA researchers now suggest it’s due to a wonky lunar interior. Using data from twin spacecraft named Ebb and Flow, they found a 2–3% difference in the moon mantle’s ability to deform on each side. They say this data could be explained by the nearest hemisphere’s insides being up to 170°C hotter than the farside.

The detection of differences between the moon’s interior in the near and far hemispheres is reported in Nature this week.

Virtual model of a Venusian pancake dome shows it likely formed due to elastic lithosphere and dense lava

A trio of scientists from the Georgia Institute of Technology, Université de Lyon, and Arizona State University, respectively, has found that a likely reason flat pancake-like volcanoes form on Venus’ surface is the planet has an elastic lithosphere and volcanoes that emit dense lava.

In their paper published in the Journal of Geophysical Research: Planets, M. E. Borrelli, C. Michaut, and J. G. O’Rourke describe how they used data collected by NASA’s Magellan mission in the 1990s, to simulate how one such flat-topped could have come about and what they learned by doing so.

Planetary scientists have been wondering for many years how the oddly shaped volcanic domes came to exist on the surface of Venus. With their flat shapes and steep sides, they are unlike any volcanoes seen on Earth—they look much more like pancakes than cones. To learn more, the research trio took a unique approach. They attempted to simulate how just one of them might have come about.

Magellan mission reveals possible tectonic activity on Venus

Vast, quasi-circular features on Venus’s surface may reveal that the planet has ongoing tectonics, according to new research based on data gathered more than 30 years ago by NASA’s Magellan mission.

On Earth, the planet’s surface is continually renewed by the constant shifting and recycling of massive sections of crust, called tectonic plates, that float atop a viscous interior. Venus doesn’t have tectonic plates, but its surface is still being deformed by molten material from below.

Seeking to better understand the underlying processes driving these deformations, the researchers studied a type of feature called a corona.

How Magnetic Reconnection Jolts Electrons

An analysis using unprecedented satellite observations reveals important information about how electrons get heated throughout the Universe.

What connects solar flares that induce space weather, geomagnetic storms that cause auroras, and magnetic disruptions that spoil confinement in magnetically confined fusion devices? All these events rapidly convert stored magnetic energy into kinetic energy of surrounding electrons and positively charged ions in the plasma state of matter. The energy conversion occurs via a fundamental process called magnetic reconnection [1]. But some aspects of reconnection remain poorly understood, despite decades of scrutiny through theoretical studies, ground-and satellite-based observations, lab experiments, and numerical simulations [2]. A key unresolved problem is determining how much of the released magnetic energy goes to the electrons and how much goes to the ions, and by what physical mechanisms this energization occurs.

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