English Speed of sound Cited by user Fürwitz on 21 Nov 2023 The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium.
Polish Mars Cited by user Smyru on 02 Jun 2022 Mars – czwarta od Słońca planeta Układu Słonecznego. Krąży między orbitą Ziemi a pasem planetoid, dzielącym go od orbity Jowisza.
English Mars Cited by user GeorgiaDC on 06 Apr 2022 Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, being larger than only Mercury.
English Atmosphere of Mars Cited by user Drbogdan on 05 Apr 2022 The atmosphere of Mars is the layer of gases surrounding Mars. It is primarily composed of carbon dioxide (95%), molecular nitrogen (2.8%), and argon (2%).