SANTIAGO, Aug 20 (Reuters) – As hundreds extra satellites enter orbit, astronomers could face mounting difficulties in observing the cosmos, in accordance with a examine by the European Southern Observatory, which operates telescopes in northern Chile.
The ESO examine discovered that present proposals to launch greater than 1.7 million satellites into orbit, together with some very vibrant ones, would considerably degrade astronomical observations. There presently are roughly 15,000 satellites in orbit.
Shiny streaks of sunshine left by satellites can intervene with observatories and the standard of night-sky pictures.
“Every of those satellites, when it crosses a telescope’s area of view, leaves a vibrant line,” stated ESO astronomer Olivier Hainaut, writer of the examine revealed within the journal Astronomy & Astrophysics.
A single streak of sunshine could also be a minor nuisance, however when the numbers multiply there may be main issues. Every streak wipes away a small a part of a telescope’s view of area, Hainaut stated.
The worldwide satellite tv for pc business has grown dramatically since 2019, pushed by web companies resembling Elon Musk’s SpaceX Starlink and Amazon’s Leo.
The examine’s findings had been based mostly on simulations carried out on the Paranal Observatory in Chile’s Atacama Desert. One mannequin examined a constellation of as much as 1,000,000 satellites, with hundreds of illuminated objects seen above the ESO’s Very Giant Telescope within the Atacama shortly after sundown.
Hainaut stated the influence would rely on each the quantity and the brightness of the satellites in orbit.
“If there are 100,000, that is a degree of ache that is bearable,” Hainaut stated.
If there are 300,000, some telescopes may be disadvantaged of most of their knowledge, Hainaut added.
Regardless of the considerations, researchers stated the advantages of satellite tv for pc web companies shouldn’t be minimized, and that the problem lies in balancing technological advances with scientific discovery.
“The downside is that this type of analysis takes time, however the satellites are already being launched,” Hainaut added.
(Reporting by Nicolás Cortés and Jorge Vega; Writing by Lucinda Elliott and Fabian Cambero; Enhancing by Will Dunham)
