Sky noise refers to the unavoidable interference or disturbance present in astronomical observations due to various sources, such as atmospheric fluctuations and instrumental parameters, which can impact the detection of desired signals from the sky.

A skyquake is a phenomenon where a loud sound is reported to originate from the sky. It often manifests as a banging, or a horn-like noise. The sound may cause noticeable vibration in the ceiling or across a particular room.

1999年11月5日 · Sky noise refers to fluctuations in total power or phase of a detector caused by variations in atmospheric emissivity and path length on timescales of order one second. Sky noise causes systematic errors in the measurement of astronomical sources.

2015年6月12日 · Several days ago, we published the story about the eerie trumpet sound heard in different countries around the world. The strange sounds which allegedly came from the sky played once again, but this time, the hair-raising noise was heard last June 4th at around 3 P.M in Batangas, Philippines.

The power level of the radiation (W) can be traced from its reception by the feed, through the receiving system. The "signal" is generally noise-like (white noise, containing all frequencies in the band). For convenience, which will become clear, we often consider the equivalent noise temperature corresponding to the power level P = kT Δν

Mysterious booming noises coming from the sky could be skyquakes. Yet, still, no one really know what causes them.

“天空噪声”是天文学专有名词。来自中国天文学名词审定委员会审定发布的天文学专有名词中文译名，词条译名和中英文解释数据版权由天文学名词委所有。

The Radio Sky Sky radiation may limit the performance of your station. Part 1 of this two-part article explains global measurements and how much sky noise to expect at your station. By Darrel Emerson, AA7FV, G3SYS From the early 1930s, we have known that broadband radio radiation from the Milky Way may be a limiting factor in the

依据： 《英汉天文学名词》李竞、许邦信主编，上海科技教育出版社，2000 《英汉天文学名词》，中国科学技术出版社，2015

The Sky Noise map is useful for determining when the satellite will be located in front of noisy areas of sky. The Sky Noise maps are drawn in a format that may not be familiar to some users. The vertical axis is Declination, which is measured above (north) and below (south) of the equatorial plane. The equatorial plane is a projection of the ...