The Apple App Store allows you to upload four screenshots while Google Play accepts up to eight. Make sure to use all of them. Screenshots, app promos and walkthrough videos are prime real estate in any app store description. Including compelling imagery and screenshots that sum up an app's key features can make the difference between a download and a swift tap of the X button.
Mars Pathfinder was launched on December 4, 1996, and landed on Mars seven months later, on July 4, 1997.   Launched in 1996 by NASA, Pathfinder descended to the Martian suâ¦rface in July 1997 using parachutes, rockets, and air bags. 1 person found this useful.
The journey from Earth to Mars takes about 300 days. Every two years Mars is at its closest point, only 55 million km from Earth, and it's the ideal time to send a spacecraft. Travel time depends on the positions of the planets and how much fuel you're willing to burn.When you're trying to get to Mars, just like in a car, spending more fuel means a shorter travel time.The first spacecraft to make this journey was NASA's Mariner 4, launched on November 28, 1964 and arrived 228 days later.ravel time depends on the positions of the planets and how much fuel you're willing to burn. When you're trying to get to Mars, just like in a car, spending more fuel means a shorter travel time. The first spacecraft to make this journey was NASA's Mariner 4, launched on November 28, 1964 and arrived 228 days later.