Social Studies, 02.01.2020 20:31 formulabmath
Time between civilizations. suppose that there are 100 billion stars in the milky way galaxy, that 1 in 1 million stars gets a civilization at some point, and that these civilizations have arisen at random times over the past 5 billion years. on average, how much time separates the rise of one civilization in the galaxy from the rise of the next? based on your answer, should we expect to make radio contact with another civilization that is either at or below our own current level of technological development?
Answers: 3
Social Studies, 22.06.2019 06:30
Which action best represents the policy of appeasement followed by britain and france prior to the start of world war ii? (a)allowing hitler to annex the sudetenland as part of the munich agreement (b)signing the nazi-soviet pact binding hitler and stalin to peaceful relations (c)sending troops to fight with the liberals during the spanish civil war (d)forbidding the sale of arms to any nation at war
Answers: 2
Social Studies, 22.06.2019 07:30
The process of learning acceptable social behavior and values is called
Answers: 1
Social Studies, 23.06.2019 07:00
The political and economic power of roman catholic church was challenged during the reformation by
Answers: 1
Time between civilizations. suppose that there are 100 billion stars in the milky way galaxy, that 1...
English, 06.11.2020 18:10
Mathematics, 06.11.2020 18:10
Mathematics, 06.11.2020 18:10
Physics, 06.11.2020 18:10
Arts, 06.11.2020 18:10
Social Studies, 06.11.2020 18:10
Computers and Technology, 06.11.2020 18:10