exoplanets | M Thomas Apple Author Page

Webb finds rocky Earth-sized planet

January 13, 2023
MThomas

The finding demonstrates how the observatory could be used to search for potentially habitable planets in the cosmos and examine the chemical makeup of their atmospheres.
https://www.nbcnews.com/science/space/james-webb-telescope-finds-first-exoplanet-rcna65374

LHS 475b is 41 light years away, orbiting a red dwarf star in the Octans constellation (one of a few “modern” constellations only seen in the deep southern hemisphere).

Webb can even detect the presence of atmospheres, though given LHS475b has an orbit of two days and is a “few hundred degrees warmer than Earth,” it’s unlikely it’ll find much with this exoplanet.

Still, it’s a first. The first of many, I hope.

The 2022 Year of Space Exploration

January 2, 2023
MThomas

Lots and lots and lots of space stories occurred in 2022.

From DART to Landsat, Sagittarius A* black hole to CAPSTONE, the Korean Pathfinder to SpaceX, and to the ISS, Moon, and Mars, here’s a summary of major space exploration projects last year.

Looking forward to 2023 and beyond!

Looking for aliens in all the wrong places?

August 12, 2022
MThomas

Our search for alien life is getting serious. With better telescopes and a growing scientific consensus that we’re probably not alone in the universe, we’re beginning to look farther and wider across the vastness of space for evidence of extraterrestrials.

But it’s possible we’re looking for too few signs in too few places. Having evolved on Earth, surrounded by Earth life, we assume alien life would look and behave like terrestrial life.
https://www.thedailybeast.com/alien-hunters-need-to-start-rethinking-the-definition-of-life?

I agree that we are biased, simply based on the basics of what we understand as (carbon-based) life (i.e., ourselves).

And I agree — in principle — that scientists need to keep an open mind when looking for other life forms on exoplanets.

However, they also need to retain a sense of skepticism.

How do we find ET? Look for pollution…

February 24, 2022
MThomas

CFCs in the atmosphere above the North Pole.

“We give off waste heat (from industry and homes and so on) and artificial light at night, but perhaps most significantly, we produce chemicals that fill our atmosphere with compounds that wouldn’t otherwise be present. These artificial atmospheric constituents just might be the thing that gives us away to a distant alien species scanning the galaxy with their own powerful telescope.”
https://phys.org/news/2022-02-webb-telescope-civilizations-air-pollution.html

Or, as Futurism puts it: “SCIENTISTS ALREADY PLOTTING HOW James Webb COULD DETECT ALIEN CIVILIZATIONS WHOA.”

Just. Settle down, wouldja. Sheesh.

Scientists have proposed aiming the James Webb space telescope the Trappist system, specifically Trappist-1e.

Really hope this isn’t what they find…

And you thought living on Earth in 2020 was bad…

November 7, 2020
MThomas

On the scorching hot planet, hundreds of light-years away, oceans are made of molten lava, winds reach supersonic speeds and rain is made of rocks. Scientists have referred to the bizarre, hellish exoplanet as one of the most “extreme” ever discovered.
https://www.cbsnews.com/news/astronomers-discover-hell-planet-k2-141b-rock-rain-lava-oceans/?ftag=CNM-00-10aab6a&linkId=103730808&fbclid=IwAR2W9JqL9gjnrBTJeZ4bMbV4XsnqO_1kScgP0GLq7eYbq__0bDtmqcbH4BM

I think we may have seen this kind of planet before…

Yep, that’s it.

Hey, WordPress, why did you delete my post’s headline?

November 6, 2020
MThomas

According to NASA estimates there are at least 100 billion stars in the Milky Way, of which about 4 billion are sunlike. If only 7 percent of those stars have habitable planets — a seriously conservative estimate — there could be as many as 300 million potentially habitable Earths out there in the whole Milky Way alone.
https://www.nytimes.com/2020/11/05/science/astronomy-exoplanets-kepler.html

It takes a while to collect, sort through, analyze, write up, endure peer review, and publish data from scientific projects.

That’s why finally we’re seeing this, 11 years after Kepler was launched to scour the galaxy for exoplanets.

Now the real challenge will be figuring out how to get there…

It’s time to move on the next factor in the Drake equation for extraterrestrial civilizations: the fraction of these worlds on which life emerges. The search for even a single slime mold on some alien rock would revolutionize biology, and it is a worthy agenda for the next half-century as humans continue the climb out of ourselves and into the universe in the endless quest to end our cosmic loneliness.

Scientists discover Mars-sized rogue planet wandering the galaxy

November 2, 2020
MThomas

It’s possible our galaxy is filled to the brim with these rogue planets, but this one is particularly unusual for one special reason: it is the smallest found to date — even smaller than Earth — with a mass similar to Mars.
https://www.cbsnews.com/news/rogue-planet-exoplanet-floating-through-space-discovery-milky-way/

And the video at the top of the page linked above has NOTHING to do with rogue planets.

Sigh.

I Only Wanted to See You Under the Iron Rain…

March 14, 2020
MThomas

Wasp-76b, as it’s known, orbits so close in to its host star, its dayside temperatures exceed 2,400C – hot enough to vaporise metals.

Hmm….this reminds me of…let me think for a minute…wait, I got it…

Yeah, that’s the one. I think.

(Seriously, check it out. Not even the Jedi could possibly handle an actual “inferno” planet.)

Have some Proxima Centauri with ESPRESSO

January 20, 2020
MThomas

“Proxima is our closest neighbor in an immense universe. How could we not be charmed by it?”

Well, the planet may or may not exist (the confirmation data won’t be publicly available for another couple years).

And it is most likely not inhabitable — despite being dubbed a “Super-Earth” (which really only refers to size and not whether it’s “Earth-like” or not).

Still, regardless of these facts, the most important part of this article in Scientific American is the science:

“We tried different tools to prove ourselves wrong, but we failed. However, we have to keep the doors open to all possible doubt and skepticism.”

Yes, the astronomers tried to prove their own discovery was a mistake. That’s how it works, folks. Challenge your assumptions, not jump to conclusions. Continue Reading

New “habitable” Earth? 🌍

January 10, 2020
MThomas

The newly discovered exoplanet, called TOI 700 d, is located about 100 light-years away from us and is roughly 20% larger than Earth.

Okay, not exactly close, but looking good…

A year on TOI 700 d takes 37 days.

Um. Wait. What?

One thing astronomers have discovered though is that TOI 700 d is tidally locked to its star, which means that one half bathes in eternal sunlight, and the other half always exists in darkness.

Oy.

And even better…

One of the burning questions is whether the planet has an atmosphere or not.

Is this really the best way to phrase this? 😂

I vote we pass on this one…

https://www.universal-sci.com/headlines/2020/1/8/nasa-discovered-a-potentially-habitable-earth-sized-exoplanet

PS I’ve been trying futilely to get WordPress not to screw up the formatting. To no avail.

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