Visiting Mars is the next big chalenge in space (explore).

Future Mars exploration missions will present scientists and astronauts alike with a host of problem that will challenge human survival. Accessing water, dealing with a frigid planet that lacks oxygen and coping with dangerous levels of radiation are among the biggest hurdles to overcome.

Explanation:

Explanation:

What are some of the challenges in exploring Mars?

Every challenge astronauts will face on a flight to Mars

The flight trajectory for Mars and corrective maneuvers.

Spacecraft and fuel management.

Radiation, microgravity, and astronaut health.

Isolation and psychological issues.

Communications (in transit and on Mars)

The Mars approach and orbital insertion.

major league baseball

explanation:

jack roosevelt robinson broke the color barrier in major league baseball.as he was the first african american to play in the major leagues, jackie robinson became the target of racial abuse. jackie robinson is referring to the historic event, harlem riot.

8 ish depending on the what grade