From Newsgroup: rec.arts.sf.written

ram@zedat.fu-berlin.de (Stefan Ram) wrote or quoted:

The article links probably are clickbait based on
"Round-Trip Mars Missions in the 2031 Window: Feasible and
Extreme Scenarios Derived from CA21-Anchored Trajectories"
(2025-10-24) by Marcelo de Oliveira Souza.

So what I take from this: What might be new is the restriction
of travel to a plane. The paper says,

. . .
|This work establishes, for the first time, a complete and
|dynamically coherent framework for round-trip EarthrCoMarsrCoEarth
|missions within the 2031 opposition, derived from the
|CA21-anchored astrodynamics approach. Using precise
|Lambert-based modeling and JPL Horizons ephemerides, two
|closed trajectories were identified and validated: an extreme
|33+30+90-day configuration and a feasible 56+35+135-day
|configuration. Together, they demonstrate that sub-year
|round-trip missions between Earth and Mars are not only
|geometrically possible but also dynamically consistent when
|constrained to the orbital plane of asteroid 2001 CA21.
|
|The extreme configuration defines the upper physical limit of
|heliocentric transfer performance, requiring energy levels
|beyond current propulsion capability but remaining fully
|compatible with classical gravitational mechanics.
|It illustrates what could be achieved by future high-specific-
|impulse systems or staged orbit-to-orbit architectures.
. . .
What that paper says.




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From Newsgroup: rec.arts.sf.written

Cryptoengineer <petertrei@gmail.com> wrote or quoted:

I took a quick look at both articles, and still have no idea as to how
the faster trip is obtained, and what observing asteroids have to do
with it.

The article links probably are clickbait based on
"Round-Trip Mars Missions in the 2031 Window: Feasible and
Extreme Scenarios Derived from CA21-Anchored Trajectories"
(2025-10-24) by Marcelo de Oliveira Souza.


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From Newsgroup: rec.arts.sf.written

Tony Nance <tnusenet17@gmail.com> wrote or quoted:

On 5/3/26 11:46 AM, Stefan Ram wrote:

The article links probably are clickbait based on
"Round-Trip Mars Missions in the 2031 Window: Feasible and
Extreme Scenarios Derived from CA21-Anchored Trajectories"
(2025-10-24) by Marcelo de Oliveira Souza.

While that is surely a related precursor by the same author, the summary >articles I linked to are based on:
" Using asteroid early orbital data for rapid mars missions "
in the Sept 2026(!) volume of Acta Astronautica.

. . .

With "clickbait" I did not want to refer to your post, but rather the
tendency of some magazines to take a paper like, "Melanosomes suggest
koreanosaurus boseongensis had dark pigments", and turn it into,
"This unbelievable color changes everything we know about dinosaurs!".


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From Newsgroup: rec.arts.sf.written

Cryptoengineer <petertrei@gmail.com> wrote or quoted:

Again, how is this news?

It seems that using the orbital plane of the asteroid 2001 CA21
as a reference, a specific orbital corridor that intersects the
paths of Earth and Mars can be created that avoids burning massive
amounts of fuel on "plane changes" (tilting the spacecraft's orbit
up or down relative to the solar system).

However, standard computational models (like a blind, massive
computational searches) missed this shortcut because the search
spaces are too massive and standard algorithms search in the range
of the drives we have today.


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From Newsgroup: rec.arts.sf.written

On Sun, 3 May 2026 09:11:26 -0400, Tony Nance wrote:

No joking: Get there in as little as 56 days, roundtrips as short as
153 days

This is a job for ion rockets, or possibly NERVA <https://en.wikipedia.org/wiki/NERVA>. Would get you there in a month.
--- Synchronet 3.21f-Linux NewsLink 1.2

From Newsgroup: rec.arts.sf.written

On Sun, 3 May 2026 21:12:36 -0500, Lynn McGuire wrote:

I prefer the one gravity seven day flight as chronicled in "Red
Thunder" by John Varley.

Who wouldnrCOt? ;)

But that would require some major amount (or exotic kind) of fuel and
thrust ...

We could do even higher accelerations, if we could submerge the
occupants in some kind of fluid that would give them neutral buoyancy
and that they could breathe ...
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From Newsgroup: rec.arts.sf.written

On 5/3/2026 8:11 AM, Tony Nance wrote:

No joking: Get there in as little as 56 days, roundtrips as short as 153 days

https://phys.org/news/2026-04-interplanetary-shortcut- mars.html#google_vignette

and

https://gizmodo.com/astronomer-finds-a-shortcut-to-mars-by-following-an- asteroids-journey-through-space-2000752127

Some quotes:
" In a new study, Marcelo de Oliveira Souza of the State University of Northern Rio de Janeiro followed the predicted route of asteroid 2001
CA21 to look for a new path to reach Mars. The results, published in the journal Acta Astronautica, identify a course that would take
approximately 153 days for a round trip to the Red Planet and back. "

"The paper does not suggest that future missions must follow this
specific asteroid. Instead, it demonstrates a possible way to identify faster flight paths that traditional methods might miss. "This study illustrates how the well-defined plane geometry of a preliminary small-
body orbit can be employed as a methodological screening tool for rapid interplanetary transfer identification." "

I prefer the one gravity seven day flight as chronicled in "Red Thunder"
by John Varley.

Lynn

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From Newsgroup: rec.arts.sf.written

On 5/3/2026 9:30 PM, Lawrence DrCOOliveiro wrote:

On Sun, 3 May 2026 21:12:36 -0500, Lynn McGuire wrote:

I prefer the one gravity seven day flight as chronicled in "Red
Thunder" by John Varley.

Who wouldnrCOt? ;)

But that would require some major amount (or exotic kind) of fuel and
thrust ...

We could do even higher accelerations, if we could submerge the
occupants in some kind of fluid that would give them neutral buoyancy
and that they could breathe ...

Nuclear bombs with a huge impingement plate.

Lynn

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From Newsgroup: rec.arts.sf.written

Verily, in article <dino-20260503175558@ram.dialup.fu-berlin.de>, did ram@zedat.fu-berlin.de deliver unto us this message:

With "clickbait" I did not want to refer to your post, but rather the
tendency of some magazines to take a paper like, "Melanosomes suggest
koreanosaurus boseongensis had dark pigments", and turn it into,
"This unbelievable color changes everything we know about dinosaurs!".

Unfortunately, it works. YouTube looks the way it does because clickbait works.
--
The True Melissa - Canal Winchester - Ohio
United States of America - North America - Earth
Solar System - Milky Way - Local Group
Virgo Cluster - Laniakea Supercluster - Cosmos
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From Newsgroup: rec.arts.sf.written

On 2026-05-04, The True Melissa <thetruemelissa@gmail.com> wrote:

Verily, in article <dino-20260503175558@ram.dialup.fu-berlin.de>, did ram@zedat.fu-berlin.de deliver unto us this message:

With "clickbait" I did not want to refer to your
post, but rather the tendency of some magazines
to take a paper like, "Melanosomes suggest
koreanosaurus boseongensis had dark pigments",
and turn it into, "This unbelievable color
changes everything we know about dinosaurs!".

Unfortunately, it works. YouTube looks the way
it does because clickbait works.

FWIW, clickbait works because a person is an
ongoing self-referential lie, thus eager to
believe even more lies.
--
v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v
| alt.troll.adam-h-kerman: proof that the |
| internet sometimes gets something right | ^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^
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