Light reflected on the moon by the Earth

2001/05/03 Elhuyar Zientzia

• Astronomia

The image of the Moon shows the white light reflected by the Earth. The bright part is illuminated by the Sun and as astronomer Chris Proctor of the Torbay Astronomy Society had to make a long exposure, that part appears "burned".

This half-shade dead light can be measured to calculate the brightness of the Earth. Thus, if the Earth is bright, it means it reflects much sunlight and, therefore, that the temperature of the Earth is low.

The light reflected by the Earth on the Moon has been observed for a long period of time to observe the relationship between the cloud cover and atmospheric particles known as aerosols in climate change. Surprised, the researchers detected periodic changes of 20% on the island of Earth. In addition, they have shown that in the last five years the brightness of the Earth has decreased considerably, indicating an increase in Earth's temperature. At the same time, the increase in the magnetic activity of the Sun suggests that the magnetic field of the Sun influences the climate of the Earth.