Science
There Is No Air In Space To Provide Reaction Forces, So Where Does The Power To Move The Spacecraft Forward Come From?
The law of conservation of momentum means that the total momentum of a system remains constant when it is not subject to external forces or when the sum of the vectors of external forces is zero
Once The World's Largest 'Eye In The Sky', It Sent Telegrams To Aliens, Now It's a Dumping Ground
The Arecibo Radio Telescope in the United States used to be the largest radio telescope in the world, with a diameter of 350 meters. As the most powerful radio telescope ever built, scientists have achieved many scientific results with the radio Arecibo radio telescope in the past decades
If The Milky Way Were Reduced To The Size Of An Electron, How Big Would The Universe Be?
Scientists using modern observation equipment have determined the size, position, distance and other data of most of the objects in our galaxy
Why Is The Singularity Of a Black Hole Infinitely Small In Size And Infinitely Dense? Scientists: We'Re Helpless Too
Since gravity is actually a manifestation of gravity, and the magnitude of gravity is proportional to mass, for those objects with smaller masses, their own gravity is smaller
How Fast Is Mach 1? How Many Kilometres Per Hour Is It Equivalent To?
In essence, sound is actually a wave generated by the vibration of the object, the sound waves in the air is actually a "longitudinal wave"
If The Earth Shrank To The Size Of An Electron, How Big Would The Universe Be?
A rigorous discussion of the unknown is not possible, so it is necessary to narrow down the universe we are discussing to only the universe we can see
Will Humanity Be Trapped In The Solar System Forever? What Would Humanity Do Without Ftl And Wormholes?
The solar system is a system of celestial bodies kept in motion by the sun's gravity, which means that all bodies within the effective range of the sun's gravity are part of the solar system, so by this definition, how large is the solar system?
If Scientists Have Discovered Something That Shouldn't Have Existed Hundreds Of Millions Of Years Ago, Should Humanity Be Wary?
In theory, when a civilization develops into a civilization that can cross the stars, there is basically no risk of extinction
How Terrible Is The Strongest Known 'Starquake'? It's The Equivalent Of a 21 Magnitude Earthquake And Would Be Too Much For Earth To Handle
Earthquakes are a natural phenomenon known to all of us, and they are not unique to the earth. In theory, any planet with a solid crust can have an 'earthquake', and for the sake of distinction, we can call it a 'starquake'. The strength of a 'starshock' varies from planet to planet, so how terrible is the strongest known 'starshock'?
On a More Macroscopic Level, Could The Solar System Be An Atom?
In the macroscopic world, the solar system is a system of celestial bodies centred on the sun, in which the vast majority of mass is concentrated and the major planets orbit the sun, while in the microscopic world, an atom is a microscopic system centred on the nucleus of an atom, in which the vast majority of mass is concentrated and electrons orbit the nucleus.
