Клик на название графика включает/выключает его. "-Дельта" - графики скорости изменения, единиц в минуту.
If we send messages to outer space, what should they say? And how should they be written? Should we even attempt to make contact with whatever (or whoever) might be out there at all? Available with YouTube Premium - https://www.youtube.com/premium/originals. To see if Premium is available in your country, click here: https://goo.gl/A3HtfP