Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

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On Wednesday, April 20, 2022 at 6:25:53 PM UTC-7, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnal...@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

Picky, picky... even if you are technically correct... here...

https://www.nasa.gov/content/eclipses-and-transits-overview

... everything you ever need to know about eclipses and transits...

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On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnalsing@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

--- SoupGate-Win32 v1.05
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On Wednesday, April 20, 2022 at 5:57:10 PM UTC-7, palsing wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

Looks like a potato baking in the sun?
Bruhaha!!!!!!!!!!

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On Thursday, April 21, 2022 at 1:57:10 AM UTC+1, palsing wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

Wonderful time lapse Paul and thanks for bringing it up.

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On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnalsing@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

very very cool!!!

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On 21/04/2022 02:25, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnalsing@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

That is splitting hairs - it is close enough to being an annular eclipse
given the dimensions of the sun and moon. Rather a nice video.

--
Regards,
Martin Brown

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On Sunday, April 24, 2022 at 9:12:14 AM UTC-4, Martin Brown wrote:

On 21/04/2022 02:25, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnal...@gmail.com> wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

That is splitting hairs - it is close enough to being an annular eclipse given the dimensions of the sun and moon. Rather a nice video.

If a discernible shadow is involved, then it should be an eclipse.

--- SoupGate-Win32 v1.05
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On Sun, 24 Apr 2022 14:12:12 +0100, Martin Brown
<'''newspam'''@nonad.co.uk> wrote:

On 21/04/2022 02:25, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnalsing@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

That is splitting hairs - it is close enough to being an annular eclipse >given the dimensions of the sun and moon. Rather a nice video.

I wouldn't say it's splitting hairs. This is not an eclipse, very much
by the formal definitions of both "eclipse" and "transit". (An annular
eclipse is also a transit... we really only use the term because the
same conditions that generate it can also produce a true eclipse, so
the distinction makes sense.)

Of course, in casual usage the two terms overlap and are commonly
conflated. Which is not big deal, and I'm not complaining. Just
pointing out a technical distinction, that we, as astronomers, should
at least be aware of.

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On Thursday, April 21, 2022 at 1:57:10 AM UTC+1, palsing wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It would seem an eclipse is primarily when a moon passes between the planet and the central Sun in its orbit of a planet.

A transit is when a planet passes between another planet and the central Sun in its orbit of the Sun.

The time lapse qualifies supplied by Paul as an eclipse technically, at least for solar system researchers.

--- SoupGate-Win32 v1.05
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On Monday, April 25, 2022 at 6:02:46 AM UTC-7, kellehe...@gmail.com wrote:

On Thursday, April 21, 2022 at 1:57:10 AM UTC+1, palsing wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It would seem an eclipse is primarily when a moon passes between the planet and the central Sun in its orbit of a planet.

A transit is when a planet passes between another planet and the central Sun in its orbit of the Sun.

The time lapse qualifies supplied by Paul as an eclipse technically, at least for solar system researchers.

As is often the case, Gerald, your response is somewhat garbled.

All I can say is that the article that I referenced was written by someone representing both JPL and NASA... and if those towering institutions call it an eclipse, who am I to argue with them? Who are YOU to argue with them?

As always, YMMV...

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On Tuesday, April 26, 2022 at 4:02:12 AM UTC+1, palsing wrote:

On Monday, April 25, 2022 at 6:02:46 AM UTC-7, kellehe...@gmail.com wrote:

On Thursday, April 21, 2022 at 1:57:10 AM UTC+1, palsing wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It would seem an eclipse is primarily when a moon passes between the planet and the central Sun in its orbit of a planet.

A transit is when a planet passes between another planet and the central Sun in its orbit of the Sun.

The time lapse qualifies supplied by Paul as an eclipse technically, at least for solar system researchers.

As is often the case, Gerald, your response is somewhat garbled.

All I can say is that the article that I referenced was written by someone representing both JPL and NASA... and if those towering institutions call it an eclipse, who am I to argue with them? Who are YOU to argue with them?

As always, YMMV...

I would say, who can argue against imaging and what their eyes are telling them whether an individual or an institution. The imaging is there for those who can appreciate a planetary transit as distinct from an eclipse rather than dither around trying to
make one term look like the other and so what if the distinction looks garbled, I don't have the sole right to express the distinction in clear terms depending on whether a planet is orbiting the Sun as seen from another planet or a moon is orbiting a
parent planet.

Only Venus and Mercury have transits as seen from Earth while Venus, Mercury and the Earth have transits of the central Sun as seen from Mars. It shows appreciation of solar system structure and planetary motions by making the clear distinction between
an eclipse and a transit so the imaging you introduce does not go to waste or distracted by those who try to muddy the distinction.

It is really bad form that the intermediary imaging, which connects the long term planetary circuit of the Sun with the brief planetary transit doesn't even exist apart from this newsgroup-

https://www.popastro.com/images/planetary/observations/Venus-July%202010-January%202012.jpg

https://www.youtube.com/watch?v=w2uCtot1aDg

https://www.youtube.com/watch?v=QX6BbP1wAIs

The only personal thing in all this is an individual appreciation where long term observations are reduced in stages to provide a complete narrative so a planetary transit scales up to an orbital circuit or an orbital circuit of the Sun eventually
reduces to a planetary transit as seen from a slower moving planet further out.

--- SoupGate-Win32 v1.05
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On Wednesday, April 20, 2022 at 8:03:42 PM UTC-6, palsing wrote:

On Wednesday, April 20, 2022 at 6:25:53 PM UTC-7, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnal...@gmail.com> wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

Picky, picky... even if you are technically correct... here...

https://www.nasa.gov/content/eclipses-and-transits-overview

... everything you ever need to know about eclipses and transits...

Speaking of transits, as we know historically, transits of Venus,
viewed from Earth, have been important in determining the dimensions
of the Solar System.

I don't suppose one of these space probes will have the great good luck
of being in the right place to view a transit of Earth from Mars, as was,
as we know, immortalized in a famous Arthur C. Clarke story.

John Savard

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On Wednesday, 20 April 2022 at 21:25:53 UTC-4, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnal...@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

An extreme annular eclipse.

--- SoupGate-Win32 v1.05
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On Wed, 27 Apr 2022 15:51:02 -0700 (PDT), RichA <rander3128@gmail.com>
wrote:

On Wednesday, 20 April 2022 at 21:25:53 UTC-4, Chris L Peterson wrote:

On Wed, 20 Apr 2022 17:57:08 -0700 (PDT), palsing <pnal...@gmail.com>
wrote:

Well... how cool is this?

https://www.jpl.nasa.gov/news/nasas-perseverance-rover-captures-video-of-solar-eclipse-on-mars?utm_source=iContact&utm_medium=email&utm_campaign=nasajpl&utm_content=daily20220420

It is cool. Although it is actually a "transit", not an "eclipse".

An extreme annular eclipse.

An annular eclipse is actually a transit!

--- SoupGate-Win32 v1.05
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On Wednesday, April 27, 2022 at 4:32:29 PM UTC-7, Chris L Peterson wrote:

An annular eclipse is actually a transit!

Had you said this in your first response this would have been a much shorter thread... 🙃

--- SoupGate-Win32 v1.05
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On Thursday, April 28, 2022 at 1:38:37 AM UTC+1, palsing wrote:

On Wednesday, April 27, 2022 at 4:32:29 PM UTC-7, Chris L Peterson wrote:

An annular eclipse is actually a transit!

Had you said this in your first response this would have been a much shorter thread... 🙃

An eclipse and a transit should be two different things with no ambiguity as a transit and an eclipse are component parts of a larger picture of orbital motion.

You brought up this wonderful imaging of Phobos passing between Mars and the central Sun in its 7 hours 39 min orbital period of its parent planet, so it puts an eclipse in context of size and distance between the three component objects, in this case
the Sun, Mars and Phobos.

A transit is an entirely different animal which also represents three different components with the stationary Sun and two moving planets with relative speeds creating the spectacle.

Trying to conflate an eclipse and a transit is unhelpful so it is not even pedantic, it is just plain unhelpful for solar system structure and context.

--- SoupGate-Win32 v1.05
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On Wednesday, April 27, 2022 at 10:14:29 PM UTC-7, kellehe...@gmail.com wrote:

On Thursday, April 28, 2022 at 1:38:37 AM UTC+1, palsing wrote:

On Wednesday, April 27, 2022 at 4:32:29 PM UTC-7, Chris L Peterson wrote:

An annular eclipse is actually a transit!

Had you said this in your first response this would have been a much shorter thread... 🙃

An eclipse and a transit should be two different things with no ambiguity as a transit and an eclipse are component parts of a larger picture of orbital motion.

You brought up this wonderful imaging of Phobos passing between Mars and the central Sun in its 7 hours 39 min orbital period of its parent planet, so it puts an eclipse in context of size and distance between the three component objects, in this case

the Sun, Mars and Phobos.

A transit is an entirely different animal which also represents three different components with the stationary Sun and two moving planets with relative speeds creating the spectacle.

Trying to conflate an eclipse and a transit is unhelpful so it is not even pedantic, it is just plain unhelpful for solar system structure and context.

Gerald... it is pretty obvious that you do not know what an annular eclipse is... a search engine will help you...

--- SoupGate-Win32 v1.05
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On Thursday, April 28, 2022 at 6:46:32 AM UTC+1, palsing wrote:

On Wednesday, April 27, 2022 at 10:14:29 PM UTC-7, kellehe...@gmail.com wrote:

On Thursday, April 28, 2022 at 1:38:37 AM UTC+1, palsing wrote:

On Wednesday, April 27, 2022 at 4:32:29 PM UTC-7, Chris L Peterson wrote:

An annular eclipse is actually a transit!

Had you said this in your first response this would have been a much shorter thread... 🙃

An eclipse and a transit should be two different things with no ambiguity as a transit and an eclipse are component parts of a larger picture of orbital motion.

You brought up this wonderful imaging of Phobos passing between Mars and the central Sun in its 7 hours 39 min orbital period of its parent planet, so it puts an eclipse in context of size and distance between the three component objects, in this

case the Sun, Mars and Phobos.

A transit is an entirely different animal which also represents three different components with the stationary Sun and two moving planets with relative speeds creating the spectacle.

Trying to conflate an eclipse and a transit is unhelpful so it is not even pedantic, it is just plain unhelpful for solar system structure and context.

Gerald... it is pretty obvious that you do not know what an annular eclipse is... a search engine will help you...

You should make the effort to instruct those around you what a planetary transit represents using a stepped reduction in time scales-

https://www.popastro.com/images/planetary/observations/Venus-July%202010-January%202012.jpg

https://www.youtube.com/watch?v=w2uCtot1aDg

https://www.youtube.com/watch?v=QX6BbP1wAIs

The breakthrough is the time lapse prior to a transit where the motion of the Earth is accounted for by the annual change in position of the stars relative to the central/stationary Sun.

There are no imperatives here to learn something, there is only an invitation to fill in the gap when Venus moves from the left of the Sun (evening appearance) to the right of the Sun (morning appearance) with a transit representing its faster motion
passing between the slower moving Earth and central Sun.

https://www.youtube.com/watch?v=FcrBAuLBXag

When Galileo first looked at the moons of Jupiter in their circuit of the parent planet in order to justify a heliostatic system indirectly, it opened up the opportunity for our era using a satellite to see the same thing on a planetary scale with our
parent star as a focus, it should be rightly celebrated along with the ability to discern the difference between a lunar eclipse and a planetary transit. That may yet happen so people become more involved in observations.

--- SoupGate-Win32 v1.05
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