[AlexandrKushnirtshuk (OP)]

There is something very strange about the lighting on the Perseverance landing video.

1) Reflection of the “Sun” on the surface of “Mars” as if from a searchlight (too small bright spot). The height of the device at the time of this reflection hitting the frame is 9.5 km.

2) This reflection should be exactly under the Sun, that is, perpendicular to the surface of Mars, that is, point exactly at noon, but judging by the smooth movement of the shadow (on the separating heat shield) in the northeast direction (diagonally at 13:30), there is some kind of contradiction with lighting. The movement of the shadow over the heat shield indicates the position of the Sun in the southwest direction (19:30 hours) relative to the vehicle. The reflection of the "Sun" on the surface of "Mars" indicates the position of the Sun in an easterly direction (15:00 hours) relative to the vehicle.

Perseverance Rover’s Descent and Touchdown on Mars (Official NASA Video)




There is nothing glinting on the Mars' surface accorting to official surface photos of that area. The more - there are no round shaped "bright spots" on the surface of that area of Mars.

1) https://www.google.com.ua/maps/space/mars/@18.4982121,77.6169751,26455m/data=!3m1!1e3?hl=ru


2) https://mars.nasa.gov/mars2020/mission/where-is-the-rover/

[AlexandrKushnirtshuk (OP)]

[Kryptid]

This isn't a conspiracy thread, is it?

[evan_au]

Here is a more complete video.

I see that the direction of maximum reflection on the heat shield seems to rotate as the heat shield falls further ahead of the parachute payload.
- This suggests that the reflection will move, depending on how the heat shield wobbles

[AlexandrKushnirtshuk (OP)]

This isn't a conspiracy thread, is it?

Exactly. Factual data analysis only.

[AlexandrKushnirtshuk (OP)]

I see that the direction of maximum reflection on the heat shield seems to rotate as the heat shield falls further ahead of the parachute payload.
- This suggests that the reflection will move, depending on how the heat shield wobbles

The first few seconds (which I am talking about), the heat shield falls straight and without significant wobblings.

[AlexandrKushnirtshuk (OP)]

Ghideon from scienceforums.net gave the answer to one of my questions.
Link to Ghideon's post on scienceforums.net.

@AlexandrKushnirtshuk you may look a few seconds further into the video you linked to. The heat shield is probably just wobbling after being dropped? That makes the heat shield look oval from the camera's point of view and reflections are moving.

There is another interesting question. Sorry for the many images, but they are all necessary.
Is it possible to explain such a small size sun reflection on the surface of Mars? Yellow dot on the image below is the size of Jezero Crater on Mars. Bright spot on the animation below is reflection of the Sun (from Perseverance landing video), which located inside the Jezero Crater and makes up no more than 10% of the area of Jezero Crater. Last (third) image shows how sun reflection spot looks like on Earth's surface.




Location and size of bright spot (Sun reflection), from animation above, inside Jezero Crater. That bright spot is not in the middle of the crater, and there is nothing bright in that area on two photos of that area, which are posted in the first message of this thread.

[Kryptid]

Exactly. Factual data analysis only.

No, I'm asking if you are accusing NASA of being involved in some kind of deception.

[syhprum]

I think the moon landing deniers must be having a field day when they see how cunningly live and simulated videos are contrived today.
I am not a denier of course I have no doubt that the moon landings were genuine

[Petrochemicals]

The heat shield is curved, the sun is shining onto the heat shield from beneath. The shadow and glare are in the right place. If the glare was beneath and the shadow above then I would say impossible when looking into the concave shape. If it was convex the scenario you have outlined would be impossible.

If it was flat parallel surface you would not see any glare at all due to reflection, so to call this suspicious is not creditable. The angle of the sun versus the slope of the heat shield do not appear equal, the distance and angle from the sun to the heat shield versus the distance and angle from the camera to the heat shield are not equal, yet you expect the point of observation to be equal. If everything that light hit gave glare like it was a flat perpendicular surface life would be fairly difficult.

[evan_au]

The first few seconds (which I am talking about), the heat shield falls straight and without significant wobblings.

From the image you posted from the vehicle assembly room, the heat shield is a fairly shallow dish. It doesn't take much of a wobble to change the angle of reflection significantly.

(third) image shows how sun reflection spot looks like on Earth's surface

The images of Earth show the Sun reflecting off areas of ocean. While not a mirror-smooth surface, the ocean does have a component of specular reflection (like a mirror).

There is no liquid surface water on Mars, so the surface is dominated by a dusty, rocky surface, which leads to a more diffuse reflection.

[AlexandrKushnirtshuk (OP)]

Bright spot is an evidence of the sphericity and size of the sphere, respectively. I think there can be no other explanation.
 

But in that case, the shadow on the animation below should move in the diametrically opposite direction.

[Kryptid]

Please answer my quesiton:

No, I'm asking if you are accusing NASA of being involved in some kind of deception.

[Bored chemist]

Bright spot is an evidence of the sphericity and size of the sphere, respectively. I think there can be no other explanation.
 

It is interesting that you seek to illustrate that something must be a sphere by showing a picture that looks like a sphere, but is, of course, on a flat screen.

Anyway, I'm still waiting for an answer to this

Exactly. Factual data analysis only.

No, I'm asking if you are accusing NASA of being involved in some kind of deception.

[AlexandrKushnirtshuk (OP)]

Please answer my quesiton:

Quote from: Kryptid on Today at 17:22:02
No, I'm asking if you are accusing NASA of being involved in some kind of deception.

I want to understand the nature of the bright spot on the surface of Mars in the video of the Perseverance landing. And I am not accusing NASA of being involved in some kind of deception.

[Kryptid]

Okay, good.

[yor_on]

Distrust, lifted up to a truth, isn't it :)
and the moon landing

And coca cola. I mean, who knows what that recipe contains?

Alexandr Kushnirtshuk :)

you have to accept that some things are done exactly as described, while other things are questionable. Not exactly NASA as they try to be pretty much 'unpolitical' although steered by politics. If you were talking about the NSA it would be another matter.

[AlexandrKushnirtshuk (OP)]

Sun reflection on Earth from 400 km. and Mars from 10 km. I have nothing to add to this thread.

ISS animation source: Over Earth - Incredible Space Views from ESA Astronaut Alexander Gerst

[AlexandrKushnirtshuk (OP)]

Artist’s impression of Mars four billion years ago


Size of Jezero Crater on Mars, and size of Sun reflection inside that crater, which makes up less than 10% of Jezero Crater area.



Same bright spot size on Curiosity landing video.
Complete Mars Curiosity Descent - Full Quality Enhanced HD 1080p Landing + Heat Shield impact

[AlexandrKushnirtshuk (OP)]

Asked this question on NASA forum: Lighting questions on the Perseverance landing video.