The ground telescope will be

Astronomical observatories on the ground may be ineffective in the next 40 years due to pollution of aircraft emissions and climate change, an expert said.

The 40-year timeline is set based on the extrapolation from air traffic growth figures.

" There are two factors here. Climate change is increasing the amount of cloud covering the planet. The second factor is low-cost air travel, " said Professor Gerry Gilmore, from the University of Cambridge's Astronomy Institute. , guess.

Current aircraft smoke stains only cause temporary effects with astronomers. But when there are favorable weather conditions, they can split into natural-like clouds, making it impossible for scientists to distinguish. And if the trend of low-cost aviation continues to increase, the era of astronomical ground can end sooner than expected.

However, Dr. Hermann Mannstein, from the German Space Center, said that not all of the sky will be affected by air routes, but only a certain percentage is affected.

T. An