February 27, 2025
The best day to see all seven major planets (yes, you read that right, all seven!) is Friday, February 28th.
The link will describe (and give pictures) of where to find them all in the night sky.
Finding Orion is the key to most of them. Knowing where the Pleiades are helps, too.
The next time this “parade” appears will be 2040, so fingers crossed for clear skies!
https://www.skyatnightmagazine.com/news/seven-planet-parade-28-february-2025
November 13, 2024
Jas Tiruvuru, business development manager for Orbit Fab in the UK and Europe, said the company was aiming to successfully demonstrate the technology in space by 2027.
“This will essentially be the first ever satellite to satellite refuelling demonstration funded here in the UK,” she said.
“Once we’ve proven that we can refuel to two spacecrafts we’ll be able to unlock a huge market potential.”
You know, maybe it’s just me, but I think 2027 may be a little optimistic. Just like the figure given in the article for how much the satellite sector will be worth in the future.
Aren’t there too many satellites already?
I’d like to see how this would help us colonize the solar system.
Actually, I’d like to see how they plan to get fuel up there in the first place.
Maybe my novel’s idea of using certain moons of Jupiter or Saturn as giant space gas pumps might help? 🪐
April 11, 2024
There are many words that could be used to describe WASP-76b — hellish, scorching, turbulent, chaotic, and even violent. This is a planet outside the solar system that sits so close to its star it gets hot enough to vaporize lead. So, as you can imagine, until now, “glorious” wasn’t one of those words.
https://www.space.com/hellish-exoplanet-rainbow-glory-effect-cheops
This planet (located in the constellation Pisces) seems to have a rainbow effect of concentric rings…despite being so hot that iron falls from the sky.
December 3, 2023
Because of its location near several massive stars in NGC6357, scientists expect XUE 1 to have been constantly exposed to a high ultraviolet radiation field throughout its life. However, in this extreme environment the team still detected a range of molecules that are the building blocks of rocky planets.
https://www.esa.int/Science_Exploration/Space_Science/Webb/Webb_study_reveals_rocky_planets_can_form_in_extreme_environments
In essence, this expands the possibility of finding many more rocky planets than were previous thought to be exist.
Lots of “gas giants” and a few “super Earths” have been found so far. But Webb is just getting started…
August 13, 2023
We already know that more than one object can share the same orbit; Jupiter has a collection of 120,000 asteroids following its same path around the Sun, for example. Earth has one, too. But although it’s theoretically possible, astronomers have never discovered two whole planets sharing the same orbit around a star before.
https://www.inverse.com/science/astronomers-discover-cosmic-unicorn-two-planets-on-the-same-orbit
Hmm…the language here is a bit misleading. The two objects are technically not both “planets.”
The article comments later on that the object in the dotted line circle is “a cloud of debris about twice the mass of our Moon trailing a bit behind the innermost gas giant” in one of its LaGrange points (where “Trojan” asteroids follow gas giants such as Jupiter and Saturn). So it’s way too early to say that “two” planets formed in the same orbit.
Still, this is the first time that astronomers have spotted two such objects this close to one another in the same orbit. Who knows if both will remain viable (the debris cloud could become partly or mostly absorbed by the gas giant with the rest either being expelled or thrust into separate orbits).
So why is this called a “cosmic unicorn”?
Apparently because although such Trojans “are allowed to exist by theory, but no one has ever detected them.”
Um. OK.
So, like, totally NOT at all like this? Kind of a bummer, really…
January 2, 2023
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!
December 11, 2022
Think of pizza dough flattening into an enlarging disk as it’s tossed. Because the cloud had an initial rotation, this same direction of spin has persisted…
https://www.popularmechanics.com/space/solar-system/a39729213/why-do-all-the-planets-orbit-in-the-same-direction/
So basically the answer is simply that that’s the way they all started out.
Some moons, however, do have retrograde orbits. I.e., they orbit in the opposite direction around their respective planets. Some small asteroids and comets also have retrograde orbits due to their small mass being easily affected by larger cosmic objects.
But I bet now you’re all thinking of pizza… 🍕
November 25, 2022
A new study shows that massive volcanic eruptions over an extended period of time may be responsible for changing the planet into what it is today. If there was simple life on ancient Venus, volcanism was its doom. The study also shows how powerful volcanic activity has played a role in shaping Earth’s habitability and how Earth only narrowly avoided the same fate as Venus.
https://www.universetoday.com/158696/volcanoes-are-the-worst-theyve-caused-extinctions-on-earth-and-probably-killed-venus/#more-158696
Venus is hot enough to melt lead, which is why no spaceship has ever survived to land on the surface.
And, no, there is nothing alive floating around in its toxic atmosphere.
But this is a neat article. Three future missions are planned for Venus (two by NASA – VERITAS and DAVINCI – and one by ESA – EnVision, which sounds more like a song and dance competition than a scientific probe).
Venus or bust!
January 3, 2022
…a study announced in December from a team of researchers in the journal Icarus now claims the IAU’s definition was based on astrology — a type of folklore, not science — and that it’s harming both scientific research and the popular understanding of the solar system.
I’m not sure I agree that moons of Jupiter and Saturn should be classified as “planets,” but frankly I see little difference between “dwarf planets” and “planets.”
Plus it wrecks the song I learned to remember the order…
https://www.nbcnews.com/science/space/pluto-planet-debate-rages-rcna8848
December 16, 2021
The original article title?
“Astronomers Detect Secret Water Reserves in The Largest Canyon in The Solar System”
Science isn’t quite as catchy. The hydrogen may indicate water in the form of permafrost 3 feet and more under the surface.
The high-hydrogen region is about the size of the Netherlands, and overlaps with Candor Chasma, one of the largest canyons in the Valles Marineris system.
Looks like there may be some competition for who gets to land near here first…
https://www.sciencealert.com/hidden-water-has-been-found-in-the-soil-of-mars-grand-canyon
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