Meteors are extraterrestrial objects that enter our atmosphere at very high speeds. Generally, they are small in size and completely vaporize due to air friction. When they do not fully burn up and reach the ground, they are referred to as meteorites. At an altitude of approximately 100 km, the friction of the meteor(-ite) in the air temporarily ionizes the atmosphere it passes through. During this moment, the ionized zone behaves like a mirror for certain radio wavelengths. This phenomenon allows for the reception of distant radio signals, which are normally too weak to be heard under regular conditions, by reflecting the waves off the meteor's trail. Basically, all that is required to listen to the entry of meteors into the atmosphere is an antenna and a radio receiver.

The received signals are from the BRAMS beacon located in Dourbes (Belgium). This 120W beacon continuously transmits a circularly polarized RF wave at 49.970 MHz.

Unlike other pages on this site, the dates and times displayed here are in Coordinated Universal Time (UTC).

Latest main spectrogram (Hor. span=10 minutes, Vert. span=100 Hz)

Zoomed-in spectrogram of the latest major detection

((Hor. span=2 minutes, Vert. span=33 Hz))

Number of meteors detected per hour today

 Audio frequency of detected meteors today

Number of meteors detected per hour this month