subject
Physics, 06.05.2020 03:02 Schoolwork100

Each Voyager spacecraft carries a "postcard" designed to be understandable to any aliens that might someday encounter it. On the "postcard," scientists pinpointed the location of Earth by triangulating it between pulsars. Why did the scientists choose pulsars rather than some other type of star?

A)Pulsars are very bright and therefore easy to find.
B)Several pulsars are located within a dozen light-years of our solar system, making them useful for finding our solar system.
C)We're pretty sure that aliens will have only radio telescopes and not optical telescopes, so they'll have a better chance of seeing pulsars than ordinary stars.
D)Pulsars are easy to identify by their almost perfectly steady periods of pulsation.

ansver
Answers: 3

Other questions on the subject: Physics

image
Physics, 21.06.2019 23:40, kayal1076
Aregular polygon has angkes of size 150° each. how many side has the polygon
Answers: 1
image
Physics, 22.06.2019 07:40, Hudman57
How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.
Answers: 3
image
Physics, 22.06.2019 16:20, Kkgiddy
Iupil u5l aluve time remaining 01: 53: 45 ei and both agreed that childhood experiences play an important role in the development of oneself a sigmund freud alfred adler b. carl jung alfred adler c. carl jung erik erikson d. sigmund freud.. carl jung select the best answer from the choices provided save and exit next submit mark this and return
Answers: 1
image
Physics, 22.06.2019 18:30, Jasten
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
Answers: 1
You know the right answer?
Each Voyager spacecraft carries a "postcard" designed to be understandable to any aliens that might...

Questions in other subjects:

Konu
Mathematics, 03.02.2020 10:53