Hellas Planitia includes the word "planitia" which is the latin word for "plain" in its name. The name would seem to indicate thats Hellas Planitia is a low lying plain, yet it is clearly a crater, and a very large one at that. The most probable reason for this discrepancy in its name is because: a. It is a simple naming error that for some reason has so far escaped correction. b. There is a disagreement among astronomers about the true nature of Hellas Planitia. c. Its true nature was not apparent over 100 years ago when it was observed using ground based telescopes. d. Astronomers really know its true nature and misconceptions among the public among the public are not of great concern to them.

Q: Why are Mercury and the Moon so much more heavily cratered than the Earth? Explain how crater counts…

A: The fact that Mercury and Moon are more heavily cratered than Earth implies that the their surfaces…

Q: If you stood on Earth during its formation, during which it captured about 2.1 x 1011 particles per…

A: Given, N=2.1×1011 s-1A=260m2Re=6378 km

Q: What is the angular diameter of Saturn (in degrees) as seen from the surface of Rhea?

A: We can use the small angle formula to calculate angular diameter θ= dD Where θ is angular diameter ,…

Q: What is the smallest size crater on the moon? 240 km 24 km 2.4 km 1 km much smaller than 1 km

A: The moon is full of craters of various sizes.

Q: Enceladus is a moon of Saturn. What unique feature does it possess? Cryovolcanism, where water…

A: In this, it is asking about the unique feature of Enceladus.

Q: 21) What evidence is there that Neptune's moon Triton has been geologically active recently?

A: Triton is the largest moon of the planet Neptune. It orbits in the direction opposite to Neptune's…

Q: 6b) If it is true that asteroids and comets have always been raining down on the moon, then is…

A: 6.b) It is true that asteroid and comet are have always been raining down on the moon. In this basis…

Q: What is the angular diameter of Saturn (in degrees) as seen from the surface of Dione?

A: In this question we have to find angular diameter of Saturn from the surface of dione  Distance…

Q: If you stood on Earth during its formation, during which it captured about 3.1 x 1011 particles per…

A: Given, Number of particles captured by earth during its formation= 3.1*1011 /sec =3.1×1011×60×60/…

Q: At what time of day might you see a full moon just rising above the eastern horizon? 6 PM noon 6 AM…

A: Solution:  The answer is Option A) 6 PM

Q: When Dawn studied Ceres more closely from orbit, what did the famous, attention-grabbing feature…

A: To explain the correct answer is given below.

Q: Which of the following is least reasonable regarding impact craters? Group of answer choices The…

A: "The size and shape of the crater and the amount of material excavated depends on factors such as…

Q: The high-speed winds, high-level white clouds of methane ice crystals, and cyclonic circulations on…

A: Neptune radiates 2.7 times the heat that it receives from sun, which causes its high speed winds.

Q: A crater on the Moon is 28 km in diameter. If a typical meteorite is 11 times smaller than the…

A:

Q: What advantages do large telescopes have over smaller ones? a. larger collecting areas b. both…

A: telescopes are used to get the information about the far most foreign  bodies.

Q: Describe the atmosphere of Titan. What did the Cassini/Huygens mission learn about Titan’s surface?

A: Titan’s atmosphere is consisting of layers of different gases covering the entire Titan. It is known…

Q: In the previous lab, we calculated the area in between Mars' and Jupiter's orbit to be ~1.6e18 km2.…

A: Given: The area between Mars and Jupiter belt, A = 1.6×1018 km No. Of asteroids in the belt, n =…

Q: channel

A:

Q: Formation theories for the Moon have come and gone due to the discovery of new knowledge. The…

A: Alfred Wegener's theory is called as the Continental Drift Theory. He made it by observing…

Q: The rings of Uranus were discovered   a. during an occultation (an eclipse) of a star.   b. during…

A: Introduction: All Jovian planets have rings.

Q: What is special about the asteroid Vesta?    a It is an S-type asteroid that never underwent any…

A:

Q: How close is Charon to Pluto's Roche limit?

A: How close is Charon to Pluto's Roche limit.

Q: What will be the temperature of a Kuiper belt object at 40 AU, if the Earth is heated up to 220 K?…

A: Astrophysics.

Q: What sources of data might help us determine more about how Earth's Moon formed?

A: The formation of the Earth has happened somewhat about 4.5 billion years back. According to the…

Q: Both Venus and Mars have   a. volcanic craters only   b. impact craters only   c. some…

A: As per study both Venus and mars have some volcanic and some impact craters .

Q: Jupiter's moon Metis has a radius of only 20 km, and a mass of 9 x 1016 kg. Answer the following:…

A:

Q: Which of the following events can NOT be explained by a giant impact event? O The large metallic…

A: The events which can be explained by giant impact event are the formation of the moon , the extreme…

Q: How did Dawn's GRAND instrument detect (probable) ice a short distance under much of Ceres's…

A: To explain the correct answer is given below.

Q: What is the angular diameter of Saturn (in degrees) as seen from the surface of Hyperion? (Note:…

A: Angular diameter, from small angle approximation Here, d is the diameter of the Saturn and D is the…