The meaning of getting to Mars? Your view?

Putting a lot of heat/light blocking materials in orbit could keep the temperature down and allow the climate to stay habitable as the sun starts putting out more and more energy.

actually, the entire point is that youd have to dig another big pit to extract the rock that youd use to fill an old strip mine. Youd just create another hole. He had no answer for that-"I really never thought of that" he said in summary.

500-600 million years in the future

The Sun's increasing luminosity begins to disrupt the carbonate-silicate cycle; higher luminosity increases weathering of surface rocks, which traps carbon dioxide in the ground as carbonate. As water evaporates from the Earth's surface, rocks harden, causing plate tectonics to slow and eventually stop once the oceans evaporate completely. With less volcanism to recycle carbon into the Earth's atmosphere, carbon dioxide levels begin to fall. By this time, carbon dioxide levels will fall to the point at which C3 photosynthesis is no longer possible. All plants that utilize C3 photosynthesis (≈99 percent of present-day species) will die.

700-800 million years in the future

The death of most plant life will result in less oxygen in the atmosphere, allowing for more DNA-damaging ultraviolet radiation to reach the surface. The rising temperatures will increase chemical reactions in the atmosphere, further lowering oxygen levels. Flying animals would be better off because of their ability to travel large distances looking for cooler temperatures. Many animals may be driven to the poles or possibly underground. These creatures would become active during the polar night and hibernate during the polar day due to the intense heat and radiation. Much of the land would become a barren desert, and plants and animals would primarily be found in the oceans.

800 million years in the future

Carbon dioxide levels fall to the point at which C4 photosynthesis is no longer possible. Without plant life to recycle oxygen in the atmosphere, free oxygen and the ozone layer will disappear from the atmosphere allowing for intense levels of deadly UV light to reach the surface. In the book The Life and Death of Planet Earth, authors Peter D. Ward and Donald Brownlee stated that some animal life may be able to survive in the oceans. Eventually, however, all multicellular life will die out. The only life left on the Earth after this will be single-celled organisms.

1.1 billion years in the future

The Sun's luminosity has risen by 10%, causing Earth's surface temperatures to reach an average of 47 °C; 116 °F. The atmosphere will become a "moist greenhouse", resulting in a runaway evaporation of the oceans. This would cause plate tectonics to stop completely, if not already stopped before this time. Pockets of water may still be present at the poles, allowing abodes for simple life.

2.8 billion years in the future

Earth's surface temperature reaches 147 °C; 296 °F, even at the poles. At this point, all life, now reduced to unicellular colonies in isolated, scattered microenvironments such as high-altitude lakes or caves, will go extinct.

3.5-4.5 billion years in the future

All water currently present in oceans (if not lost earlier) evaporates. The greenhouse effect caused by the massive, water-rich atmosphere, combined with the Sun's luminosity reaching roughly 35-40% above its present value, will result in Earth's surface temperature rising to 1,130 °C; 2,060 °F, which is hot enough to melt some surface rock. This period in Earth's future is often compared to Venus today, but the temperature is actually around two times the temperature on Venus today, and at this temperature the surface will be partially molten, while Venus probably has a mostly solid surface at present.

5.4 billion years in the future

With the hydrogen supply exhausted at its core, the Sun leaves the main sequence and begins to evolve into a red giant.

7.59 billion years in the future

The Earth and Moon are very likely destroyed by falling into the Sun, just before the Sun reaches the tip of its red giant phase and its maximum radius of 256 times the present-day value. Before the final collision, the Moon possibly spirals below Earth's Roche limit, breaking into a ring of debris, most of which falls to the Earth's surface.

7.9 billion years in the future

The Sun reaches the tip of the red-giant branch of the Hertzsprung-Russell diagram, achieving its maximum radius of 256 times the present-day value. In the process, Mercury, Venus, and very likely Earth are destroyed.

Barnard's star seems to be a stable red dwarf, and that's a possibility. It's about six light years away.

Personally as I am not the expansive type conquer the galaxy and be everywhere I would be fine with half a dozen of red dwarfs colonized.

"Using microwaves to transport energy to a planets surface". That could be very exciting to those living on the planets surface.

There is at the moment a total of zero (0) rational reason why humans should try and colonize other planets. This thread is a sci-fi porn fest.

At the moment, the main threat to our survival is climate change. Let's deal with that first.

There is no need to constrain our energy use.

If we drastically increase our energy use, the waste heat could be countered by blocking more sunlight.

The solar system works fine. The Earth has sustainable biological ecosystems and atmospheric/geological cycles that keep its climate more or less stable.

livinglava wrote:

The solar system works fine. The Earth has sustainable biological ecosystems and atmospheric/geological cycles that keep its climate more or less stable.

The solar system doesn't work fine. Take a look at the timeline of the future that I copied here:
https://able2know.org/topic/545162-12#post-6962955