January 12, 2020
“Without this instability, Mars likely would have had a mass closer to Earth’s and would be a very different, perhaps more Earth-like, planet compared to what it is today.”
Damn you, Jupiter and Saturn! Why couldn’t you have just stayed in your orbits and left Mars alone? (Shakes fist futilely at night sky.)
January 10, 2020
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…
PS I’ve been trying futilely to get WordPress not to screw up the formatting. To no avail.
December 20, 2019
Ever wonder this about “Super Earths”?
Do they have atmospheres and how thick are they? What kind of clouds? Do they possess oceans on their surface? Do they have rings and moons? Cheops ought to be able to address such questions just from looking for these tiny dips in light during a transit.
ESA finally does something! Wow. Go Europe!
I love how BBC says “The Americans” when referring to NASA, as if a) American is an ethnic group and b) all NASA scientists are American.
But anyway…
Prof Didier Queloz, who won this year’s Physics Nobel for discovering the first planet orbiting a Sun-like star in 1995, was on hand to watch the launch.
You can watch/listen to his interview here.
December 6, 2019
Right now, engineers have got a dummy rover practising the business of retrieving packaged rock samples. And, yes, the stand-ins really are whiteboard markers.
Yay! Whiteboard markers. Um. OK.
But different agencies and companies are finally working together?
Great!
Wait. What’s the catch?
It is, though, going to take more than a decade to achieve.
Sigh.
November 14, 2019
The pattern remains a mystery, but researchers are beginning to narrow the possibilities.
While the changes are most likely…geological in nature, planetary scientists can’t completely rule out an explanation involving microbial life.
Just as the Viking landers claimed? Uh-oh.
Or is it just chemicals (perchlorate, bleach-like substances) in the soil, releasing oxygen and methane depending on the amount of sunlight/heat?
How would this affect humans who set up camps in the low-elevations areas, where they could be closer to water?
Hm…
October 25, 2019
Future moon settlers might benefit from oxygen extraction from lunar regolith as it can be used to create breathable air as well as a source for fuel. In addition, the newly found extraction method might also be useful for Mars colonization.
Regolith covers the Moon and Mars (and presumably many other potentially habitable rocky bodies).
Of course, the composition of regolith on the Moon differs from that of Mars.
But if the new method can extract sufficient quantities of both oxygen and hydrogen, there should be ample amounts for both human usage and rocket fuel.
(Yawn.) “Dry” science? Sure. But think of the (fictional) possibilities!
October 16, 2019
Youtuber smallstars has proposed a concept that he calls the Gravity Link Starship (GLS), a variation of SpaceX’s Starshipthat will be able to provide its own artificial gravity.
Hm, I guess we’re at the point where YouTubers have better ideas than NASA…
But who pays for this? is the several billion dollar question. Not just the construction of the “hub and truss” system, but the expense of getting it into space in the first place.
Seems like science fiction at this point. But still worth a read/look:
www.universetoday.com/143368/real-artificial-gravity-for-spacexs-starship/
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Parisa Mehran
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