Term
| Radial velocity method provides information about the mass of an exoplanet, while planetary transit method output its size. This suggests that both methods allow astronomers to calculate |
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Definition
| the density of the exoplanet. |
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Term
| Current observations of planetary systems suggest that |
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Definition
| our Solar System is a very unique planetary system in the galaxy and gas giant exoplanets are usually found closer than 1 AU to their host stars. |
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Term
| _____ are the building blocks of proteins |
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Definition
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Term
| Primitive Earth's atmosphere consisted mainly of: |
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Definition
| nitrogen, carbon and hydrogen rich gasses |
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Term
| The theory of biological evolution of species states that: |
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Definition
| evolution is the progress of organisms towards better and higher forms, all living things on Earth evolved from the common ancestor, and mutation is a driving force for the organism to increase its chances for survival and reproduction |
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Term
| Natural selection is a process |
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Definition
| when the organisms best equipped with reproductive fitness will likely to pass on to future generations |
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Term
| Are bacteria considered to be a life form? |
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Definition
| Bacteria is a simplest (single cellular) life form on Earth |
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Definition
| a type of organisms that thrive in physically or geochemically extreme conditions detrimental to most life forms on Earth |
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Definition
| suggests that the Earth was “seeded” with life when celestial objects collided with the planet and has gained credibility from recent observational evidence of presence of complex organic materials in cometary tails, interstellar medium and meteorites |
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Term
| Panspermia in Greek means: |
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Definition
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Term
| Biomarkers of life in exoplanets can be found using |
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Definition
| IR spectra of ozone and methane molecules from their atmospheres |
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Term
| The Urey-Miller experiment has shown that |
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Definition
| The primordial soup of organic molecules exposed to electric discharges forms amino acids, the building blocks of life |
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Term
| Life can be defined as a process of |
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Definition
| replication of organisms driven by natural selection and metabolism that allows an organism to grow, reproduce and adapt to the environment |
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Term
| Europa is likely to have primitive life forms because it |
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Definition
| probably has a subsurface ocean of liquid water heated by volcanic processes |
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Term
| The planetary transit method help to calculate a _____ of an exoplanet |
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Definition
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Term
| The radial velocity method helps to calculate an exoplanetary's |
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Definition
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Term
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Definition
| a range of distances from a parent star to an exoplanet at which water can be found in liquid state |
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Term
| A common feature of all life forms on Earth |
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Definition
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