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[TIME SUBJECT TO CHANGE] This is the fourth fully integrated full stack test flight of Starship and the mighty Super Heavy booster, the largest and most powerful rocket to ever fly. It produces over twice as much thrust as the Saturn V that took humans to the moon.

The goal of the test is to get further along than IFT-3 in March, 2024. If all goes well, Starship will re-enter in the Indian Ocean about 65 minutes after it lifts off from Starbase, TX, on a suborbital trajectory.

Want more information? We’ve got a video talking about what’s new and upgraded from flight 3! — https://youtu.be/O5GY7_aVBtk.

Want to know where to watch this live? I made a video on how to visit Starbase and where to watch a launch from — https://youtu.be/aWvHrih-Juk.

Continue reading “[4K] Watch SpaceX Starship FLIGHT 4 launch and reenter LIVE!” | >

A single universal equation can closely approximate the frequency of wingbeats and fin strokes made by birds, insects, bats and whales, despite their different body sizes and wing shapes, Jens Højgaard Jensen and colleagues from Roskilde University in Denmark report in a new study published in PLOS ONE on June 5.

The ability to fly has evolved independently in many different animal groups. To minimize the energy required to fly, biologists expect that the that animals flap their wings should be determined by the natural resonance frequency of the wing. However, finding a universal mathematical description of flapping flight has proved difficult.

Researchers used dimensional analysis to calculate an equation that describes the frequency of wingbeats of flying birds, insects and bats, and the fin strokes of diving animals, including penguins and whales.

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In a development at the intersection of quantum mechanics and general relativity, researchers have made significant strides toward unraveling the mysteries of quantum gravity. This work sheds new light on future experiments that hold promise for resolving one of the most fundamental enigmas in modern physics: the reconciliation of Einstein’s theory of gravity with the principles of quantum mechanics.

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