A few months ago I came across a story that recounted the odyssey of a probe reaching a comet after a journey of more than 6,400 million kilometers. The probe in question is called Rosetta, and its journey began on March 2, 2004, a distance so large that it made it unthinkable to carry the fuel necessary for that purpose.    

  (Source of the Image: http://tecreview.itesm.mx)

  This is why scientists thought to use gravity forces to propel the probe until the encounter with the comet. They used the gravity of the earth 3 times and that of Tuesday once to reach the necessary speed.

 The comet that was to be studied was the 67P Churyumov-Gerasimenko and had a speed of 55,000 km / h, and when the Rosetta probe reached it had to reduce its speed to position next to the comet. 

It was there that curiosity came to me: "If the Earth impulses the probe by means of gravity, at what speed does the Earth travel? So, searching the internet, I found that the average speed of the Earth in its movement of translation around the Sun is 107,280 Km / h. An extremely high speed, so I wanted to compare that speed with other documented ones:  

  1) The X-15 is a supersonic aircraft, experimental model of NASA and the US Air Force, manufactured during the boom of the space race. With its 7,274 km / h it is the fastest airplane in history.

  2) The fastest car is a mixture between car and plane. The Thrust Supersonic Car is propelled by two huge lateral turbines and reaches 1,228 km / h, which brings it to the highest speed in land vehicles.  

  3) Apollo 10 reached the highest speed attained by a human being. It was during the return of his trip to the moon, when they reached the incredible figure of 39.897 km / h. 

  (Source: https://laifr.com/01/17/sabeis-la-velocidad-maxima-que-ha-alcanzado-el-hombre/ )

  Enjoy then this wonderful trip, at this enormous speed, in the largest ship we have, accompanied by all other humans !!!!!