1. What was discovered on Mars?

10. Dragon Scales
Source: NASA/JPL-Caltech/University of Arizona
NASA called these scaly patterns Dragon Scales of Mars. They are thought to be a result of erosion of ancient rocks over time though the exact process is still unknown.
This involves factors such as the nature of the water. The image was taken in July 2017.
11. Egg Rock
Source: NASA/JPL-Caltech/LANL/CNES/IRAP/LPGNantes/CNRS/IAS/MSSS
An iron meteorite, now called egg rock, was discovered in October 2016 by NASA's Curiosity rover. It is at the base of Mount Sharp in the Gale crater on Mars. 
The rock is quite tiny but can be studied in close-up views.
12. Scratchmarks
Source: NASA/JPL-Caltech/Univ. of Arizona
Do you think the dragon scales were weird? MRO found these lines on the Martian surface in 2017. These lines that look like scratch marks are linear gullies caused by dry ice sliding down the slope.

13. Lava Coils

These swirls that look like carvings on the martian rocks are known as lava coils. These are interesting shapes that appear to be done by humans, but they’re a naturally occurring phenomenon.
It happens when two lava flows in opposite directions meet and harden in the middle.
14. The Hole
Source: NASA/JPL-Caltech/Univ. of Arizona
In 2017, NASA's MRO discovered an unexplained hole on the surface of Mars. The hole is hundreds of meters in diameter. 
The hole could be due to the collapse of the surface or some kind of impact.
15. Face on Mars
Source: NASA/JPL
NASA's Viking 1 Orbiter was one of the first successful Mars missions. It took this image while zipping past the planet in 1976. 
The rock formation in the center that looks like a face was one of the first images that started a series of such ‘spottings’ on mars. Other similar photographs include a rabbit and two feminine statues.
These were interesting times in space exploration, though the lack of life on Mars was a little disappointing.
The present decade has seen a renewed interest in Mars missions. Companies such as SpaceX are positive about the idea of colonizing Mars.