NASA: Mars becomes a wonderland during the winter
NASA has published a new video captured by the Perseverance rover and the Ingenuity helicopter of an ancient "river delta" on Mars that fed from the Jezero Crater billions of years ago.
The video showed Mars turning into a wonderland during the winter, as the temperature can drop to minus 123 degrees Celsius.
CNN explained that there are two types of ice on Mars, one of which is the type found on Earth, which consists of frozen water.
The other type of Martian snow depends on carbon dioxide, or dry ice, and can land on the surface, and a few feet of snow tends to fall on the surface of Mars in its flat areas near the poles.
CNN added that the Odyssey rover, which entered Mars' orbit in 2001, witnessed frost forming and then turning into gas in sunlight, while the Viking rover observed icy frost on the surface of Mars upon its arrival in the 1970s.
At the end of winter, the accumulated ice can melt and turn into gas, creating unique shapes that NASA scientists say resemble Swiss cheese, fried eggs, spiders and other unusual formations.
Seasons last longer on Mars because the planet's elliptical orbit around the sun means that one Martian year is equal to 687 days, or roughly two years on Earth.
Source: websites