Astronomy 2021A/B Lecture Notes - Lecture 7: Robotic Spacecraft, Anomic Aphasia, Sample-Return Mission

• School: Western University
• Department: Astronomy
• Course: Astronomy 2021A/B
• Professor: Alyssa Gilbert

Document Summary

Where can we expect to find building blocks of life: require the presence of most or all of the elements used by life. Can be met by any world (produced by stars) Where can we expect to find energy for life: sunlight, consuming organic molecules, or through chemical reactions with inorganic compounds or fe, s, h, sunlight becomes weaker with increasing distance from the sun. Decreases with the square of the distance from the sun. As 10x the distance from sun, would receive 1/100 of the energy. Does life need liquid water: liquid water is essential to all life on earth, water plays three vital roles for life on earth. Dissolves organic molecules, making them available for chemical reactions within cells. Allows for the transport of chemicals into and out of cells. Involved directly in many of the metabolic reactions that occur in cells: potential liquids for life.