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ESA’s Euclid Space Telescope and the Quest For Dark Energy
https://hackaday.com/2023/07/31/esas-euclid-space-telescope-and-the-quest-for-dark-energy/
Timeline of the universe. A representation of the evolution of the universe over 13.77 billion years. The far left depicts the earliest moment we can now probe, when a period of “inflation” produced a burst of exponential growth in the universe. (Size is depicted by the vertical extent of the grid in this graphic.) For the next several billion years, the expansion of the universe gradually slowed down as the matter in the universe pulled on itself via gravity. More recently, the expansion has begun to speed up again as the repulsive effects of dark energy have come to dominate the expansion of the universe. The afterglow light seen by WMAP was emitted about 375,000 years after inflation and has traversed the universe largely unimpeded since then. The conditions of earlier times are imprinted on this light; it also forms a backlight for later developments of the universe. (Credit: NASA)
" data-medium-file="https://hackaday.com/wp-content/uploads/2023/07/CMB_Timeline300_no_WMAP.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2023/07/CMB_Timeline300_no_WMAP.jpg?w=800">Most of what humankind and other mammalian species on Earth experience of the Universe is primarily restricted to the part of the electromagnetic spectrum which our optical organs can register. …read more (https://hackaday.com/2023/07/31/esas-euclid-space-telescope-and-the-quest-for-dark-energy/)
For as popular as the Arduino platform is, it’s not without its problems. Among those is the fact that most practical debugging is often done by placing various print statements …read more (https://hackaday.com/2023/07/31/a-usable-arduino-debugging-tool/)
Anybody who has set up a satellite TV antenna will tell you that alignment is critical when picking up a signal from space. With a satellite dish it’s a straightforward …read more (https://hackaday.com/2023/07/31/just-how-is-voyager-2-going-to-sort-out-its-dish-then/)
The 433 MHz spectrum is a little bit of an oddball. It’s one of the few areas of the radio spectrum which is nearly universally unlicensed, meaning as long as …read more (https://hackaday.com/2023/07/31/rf-remote-made-easy/)
Nematodes From the Siberian Permafrost Woke Up After a 46,000 Year Long Nap
https://hackaday.com/2023/07/31/nematodes-from-the-siberian-permafrost-woke-up-after-a-46000-year-long-nap/
Location of the Duvanny Yar outcrop on the Kolyma River, northeastern Siberia. (Credit: Anastasia Shatilovich et al., 2023)
" data-medium-file="https://hackaday.com/wp-content/uploads/2023/07/nematode_siberian_permafrost_location.jpeg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2023/07/nematode_siberian_permafrost_location.jpeg?w=796">The general consensus among us mammals is that if we get very cold, we die. Within the world of nematodes, however, they’d like to differ on that viewpoint. This is …read more (https://hackaday.com/2023/07/31/nematodes-from-the-siberian-permafrost-woke-up-after-a-46000-year-long-nap/)
Cars (including LEGO ones) will roll downhill. In theory if the hill were a treadmill, the car could roll forever. In practice, there are a lot of things waiting to …read more (https://hackaday.com/2023/07/31/what-does-it-take-for-a-lego-car-to-roll-downhill-forever/)