What is the answer to the Drake equation?

R∗ = 1 yr−1 (1 star formed per year, on the average over the life of the galaxy; this was regarded as conservative) fp = 0.2 to 0.5 (one fifth to one half of all stars formed will have planets) ne = 1 to 5 (stars with planets will have between 1 and 5 planets capable of developing life)

What is the purpose of the Drake Equation?

The Drake Equation is used to estimate the number of communicating civilizations in our galaxy, or more simply put, the odds of finding intelligent life in the Milky Way.

Is the Drake Equation accurate?

The answer isn’t reliable. The Drake equation makes a significant number of assumptions, and until those assumptions are verified, we can’t trust the calculation’s results.

What is the Seager equation?

Seager equation The equation focuses on the search for planets with biosignature gases, gases produced by life that can accumulate in a planet atmosphere to levels that can be detected with remote space telescopes.

How many habitable planets are in the universe?

On November 4, 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarf stars within the Milky Way Galaxy.

How many stars does the Milky Way have?

100 billion – 400 billion
Milky Way/Stars

What does R stand for in Drake equation?

The factor R* is the mean rate of star formation in the Galaxy; fp the fraction of stars with planetary systems; ne the number of planets in such systems that are ecologically suitable for the origin of life; fl the fraction of such planets on which life in fact develops; fi the fraction of such planets on which life …

How is the Drake equation useful quizlet?

Which of the following best describes how the Drake equation is useful? It helps us understand what we need to know in order to determine the likelihood of finding other civilizations. Suppose it turns out that one in 1 million stars has a planet that at some point in its history is home to an advanced civilization.

What does Seager mean?

Seager Name Meaning ‘sea’ + gar ‘spear’. Americanized spelling of German Seeger.

What has Sara Seager?

Sara Seager’s past research is credited with laying the foundation for the field of exoplanet atmospheres, while her current research focuses on the search for signs of life on planets by way of atmospheric biosignature gases. Professor Seager works on space missions for planetary discovery and exploration.

What did the Cassini mission find about Enceladus?

Enceladus is a tiny, icy world that scientists best know from NASA’s Cassini mission to the Saturn system, which ended in 2017. During Cassini’s tenure, the spacecraft determined that the moon has an ocean hidden below its icy crust. The probe also found that Enceladus spit plumes containing material from this ocean out into space.

What kind of atmosphere does Enceladus have?

The Cassini spacecraft’s two close flybys of Saturn’s icy moon Enceladus have revealed that the moon has a significant atmosphere. Scientists, using Cassini’s magnetometer instrument for their studies, say the source may be volcanism, geysers, or gases escaping from the surface or the interior.

Is there an ocean on the moon Enceladus?

Enceladus is a tiny, icy world that scientists best know from NASA’s Cassini mission to the Saturn system, which ended in 2017. During Cassini’s tenure, the spacecraft determined that the moon has an ocean hidden below its icy crust.

Why does Enceladus have a strong continuous source?

Therefore, at Enceladus, a strong continuous source is required to maintain the atmosphere. The need for such a strong source leads scientists to consider eruptions, such as volcanoes and geysers. If such eruptions are present, Enceladus would join two other such active moons, Io at Jupiter and Triton at Neptune.

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