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Auch das noch: Lichtverschmutzung von oben. Das könnte jedenfalls drohen, wenn einer von 72 Cubesats mit dem Namen Mayak/Majak (russisch „Leuchtturm“), die vor einer Woche mit einer Sojus-2/1a von Baikonur in den Orbit gebracht wurden, sich wie geplant zu einem riesigen Tetraeder aus hochreflektierender Folie entfaltet:
New Satellite “Mayak” Might Light Up the Sky
Ob das Entfaltungsmanöver funktioniert hat, ist bislang unklar. Jedenfalls waren Sichtungen bislang entweder ganz erfolglos oder weit unter der erwarteten Helligkeit.
The satellite is set to deploy a large tetrahedron-shaped reflector. Each triangular face is 4 m² in area and should be readily visible from the ground on a twilight pass. In fact, the team claims, Mayak will be the “brightest shooting star” once unfurled with an estimated magnitude of –10, so glints from it might be almost as bright as the full Moon. Mayak could be visible in bright twilight and perhaps even during daytime passes as well. The plan is to fly Mayak in a stabilized mode for the first four weeks, then set it tumbling on all three axes, setting off a brilliant twinkling pattern.
Es geht sogar noch schlimmer:
A Japanese start-up named Star-ALE, for example, wants to create artificial meteor showers for customers starting in 2020. In fact, ideas for placing advertising in space date back to the 1980s, though thankfully, we do not have McDonald's or Pepsi logos drifting through the night sky just yet. True story: NASA and the U.S. Air Force actually studied the idea of using large reflectors placed in space to banish night during the Vietnam War, though this, too, never came to pass.
Die Kommentare dazu auf S&T sind entsprechend entgeistert.
New Satellite “Mayak” Might Light Up the Sky
Ob das Entfaltungsmanöver funktioniert hat, ist bislang unklar. Jedenfalls waren Sichtungen bislang entweder ganz erfolglos oder weit unter der erwarteten Helligkeit.
The satellite is set to deploy a large tetrahedron-shaped reflector. Each triangular face is 4 m² in area and should be readily visible from the ground on a twilight pass. In fact, the team claims, Mayak will be the “brightest shooting star” once unfurled with an estimated magnitude of –10, so glints from it might be almost as bright as the full Moon. Mayak could be visible in bright twilight and perhaps even during daytime passes as well. The plan is to fly Mayak in a stabilized mode for the first four weeks, then set it tumbling on all three axes, setting off a brilliant twinkling pattern.
Es geht sogar noch schlimmer:
A Japanese start-up named Star-ALE, for example, wants to create artificial meteor showers for customers starting in 2020. In fact, ideas for placing advertising in space date back to the 1980s, though thankfully, we do not have McDonald's or Pepsi logos drifting through the night sky just yet. True story: NASA and the U.S. Air Force actually studied the idea of using large reflectors placed in space to banish night during the Vietnam War, though this, too, never came to pass.
Die Kommentare dazu auf S&T sind entsprechend entgeistert.