Concept explainers
List three major ideas of astronomy that help frame the context of the search for life in the universe. Describe each one, along with its importance to astrobiology.
The three major ideas of astronomy that frame the context of the search for life in the universe.
Answer to Problem 1RQ
Life can be possible only when the basic requirements of the life are fulfilled on other planets.
Explanation of Solution
The three major ideas of astronomy that frame the context of the search for life in the universe are given below as.
- 1. The universe is vast and old:
In the universe, there are a number of planets or worlds in which life is possible. The universe has many galaxies like “Milky way”, planets, moons, stars, and a solar system. The age of the universe is 13.8 billion years old. At present, there are few planets where life is possible. The old age of the universe means it will take plenty of time to begin life.
- 2. The elements of life are widespread:
The observation of elements indicates the basic requirements of atmosphere that can make the life possible on the planet in a universe. It means life can also be possible on the other planets if the atmosphere is convenient for the growth of life on it.
- 3. The same physical laws that operate on Earth operate throughout the universe:
Some basic law’s which are valid on the earth surface they should also valid in the whole universe then only life can be possible on the other planets.
Conclusion:
Thus, life can be possible only when the basic requirements of the life are fulfilled on other planets.
Want to see more full solutions like this?
Chapter 3 Solutions
Life in the Universe (4th Edition)
Additional Science Textbook Solutions
Biology: Life on Earth with Physiology (11th Edition)
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Microbiology: An Introduction
Campbell Biology (11th Edition)
Human Physiology: An Integrated Approach (8th Edition)
- A eats of Softe Four adult polar bears, each of mass 440. kg, are adrift on an ice floe in the seawaters of the Arctic Ocean. The ice floe is a rectangular slab, 8.0 m long by 4.0 m wide. If the top of the ice floe is 2.00 m above the water line, how thick is the slab of ice? Express your answer to 3 sig figs in either centimeters or meters.arrow_forwardI need help with this problem and an explanation for the solution described below. (University Physics 1: Thermodynamics)arrow_forwardI need help with this problem and an explanation for the solution described below. (University Physics 1: Thermodynamics)arrow_forward
- I need help with this problem and an explanation for the solution described below. (University Physics 1: Thermodynamics)arrow_forwardNo chathptarrow_forwardGiven a heterostructure interface (e.g. two n-type semiconductors), show how the energyband structure changes near the interface once they are attached and equilibrium isobtained. Why does this happen in terms of electron motion, “built-in” potential, maintainingband gap energy and electron affinity?arrow_forward
- What is Fermi energy? Fermi Temperature? How to calculate the number density ofelectrons in a metal given the density of states?arrow_forwardHow do MOSFETS work? Explain the operating principle (the fundamental physics) for asingle-electron transistor, including the criteria for making sure it works properly.arrow_forwardWhat is meant by “effective mass”? How does it relate to the electron band diagrams?arrow_forward
- dn A material has a dispersion coefficient of dλ = -17.7 × 10-5 nm-¹, with no = 1.500 when 20 = 543.0 nm. A beam incident on the material contains wavelengths between ₁ = 425.0 nm and ₂ = 649.0 nm, and the beam's angle of incidence i is 45.45°. Use 1.000 for the index of refraction of air. Letting denote the refraction angle, what is the absolute value of the angular separation A0 of the refracted beams produced by this material? A0 =arrow_forwardFapp Fishing line app A constant horizontal force F of magnitude 12.0 N is applied to a uniform solid cylinder, which is initially at rest, by a fishing line wrapped around the cylinder. The mass of the cylinder is 10.0 kg, its radius is 10.0 cm. a) Compute the torque Tapp on the cylinder from the applied force. (1 point) b) Compute the moment of inertia of the cylinder. (1 point) c) Compute the angular acceleration of the cylinder. (1 point) d) What is the rotational displacement 0 of the cylinder after t=5.00 s? (1 point) e) How many meters x of fishing line come off the cylinder in this t=5.00 s? (1 point) f) What is the kinetic energy of the cylinder after t=5.00 s? (1 point)arrow_forwardᎾ X A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 150-kg laser sensor, that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a constant horizontal acceleration of magnitude ax = 2.84 air resistance We want to find the tension in the cable towing the sensor. a) Draw the free body diagram of the forces acting on the sensor. (1 point) m We will ignore b) Assume that the x direction is horizontal and the y direction vertical as in the drawing. Write the projection of the tension force T on the x-y coordinates using the unknown angle 0. (1 points) c) Apply the Newton second law to the x and y axis separately. (1 points) d) From the two obtained equations compute the value of the angle 0 and the magnitude of the tension force in the cable. (2 points)arrow_forward
- Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningStars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
- AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningHorizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning