An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be straightforward.
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I honestly don’t have a decent analogy for you to explain how the universe is expanding without a center and without an edge. It just does, whether we can wrap
A vast region of our solar system, called the Kuiper belt, stretches from the orbit of Neptune out to 50 or so astronomical units (AU), where an AU is the
Ancient Mars boasted abundant water, but the cold and dry conditions of today make liquid water on the Red Planet seem far less probable. However, the Mars Advanced Radar for
Satellite mega-constellations are quickly becoming the backbone of a number of industries. Cellular communication, GPS, weather monitoring and more are now, at least in part, reliant on the networks of
NASA’s Europa Clipper captured this image of a starfield—and the planet Uranus—on Nov. 5, 2025, while experimenting with one of its two stellar reference units. These star-tracking cameras are used
Satellite megaconstellations are quickly becoming the backbone of a number of industries. Cellular communication, GPS, weather monitoring and more are now, at least in part, reliant on the networks of
Blue Origin’s New Glenn rocket is powerful, but Jeff Bezos’ rocket company wants more.
Let’s start out with something that we can say for certain: we live in an expanding universe.
Travelling up from Mars’s equator towards its north pole, we find Coloe Fossae: a set of intriguing scratches within a region marked by deep valleys, speckled craters, and signs of
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