Which list gives key events regarding the exploration of space in the correct order, beginning with the earliest?(1 point) first humans on the moon, first lander on Mars, first space shuttle flight

first humans in space, first space shuttle flights, first humans on the moon

first humans on the Moon, first humans on Mars, launching of the International Space Station

first space shuttle flight, Hubble Space telescope launch, last humans on the moon

Is there any solid scientific evidence that humans have been cloned?

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing