Whoops, I forgot to mention a recent solar system milestone. Two days ago, the Earth (that’s you and that’s me!) reached aphelion, or the point in our orbit at which we’re the farthest distance away from the Sun. That puts us at approximately (give or take the distance we’ve traveled in the past two days) about 3 million miles farther away from the sun than we are at perihelion.
This happens every year in early July, which might sound backward. If we’re farthest from the sun, shouldn’t it be cooler?
The answer lies in the fact that the Earth gets closer to and farther away from the Sun, but it’s also tilted.
Our planet spins at an angle — about 23.5 degrees — which means different parts of the globe receive more (or less) sunlight depending on the time of year. In July, the Northern Hemisphere is tilted toward the sun, bringing longer days and higher sun angles that lead to more direct sunlight — all of which produce summer-like heat.
Since Kepler’s laws of motion dictate that celestial bodies orbit more slowly when farther from the sun, we are now moving at our slowest pace in orbit, slightly less than 18 miles per second (29 kilometers per second) compared to just over 19 at perihelion.
Given that, today might be a good time to relax, and enjoy the ride.
If you don’t track space news or astronomy news or science news, you may not have seen the announcement about the debut of the Vera C. Rubin Observatory’s recent drop of galactically cool imagery.
Even if you have seen the announcements, you may not know the story behind the observatory, its world-beating telescope, or the woman it’s named after. Here’s a quick orientation and of course, a look at some of that amazing imagery.
The Legacy Survey of Space and Time camera is expected to capture more information about the universe than all optical telescopes throughout history combined.
What is the observatory observing from its perch on Cerro Pachón in Chile? All the things!
In just over 10 hours of test observations, NSF–DOE Rubin Observatory has already captured millions of galaxies and Milky Way stars and thousands of asteroids. The imagery is a small preview of Rubin Observatory’s upcoming 10-year scientific mission to explore and understand some of the Universe’s biggest mysteries.
It should detect killer asteroids in striking distance of Earth and map the Milky Way. It will also answer crucial questions about dark matter, the mysterious substance that makes up most of our universe.
Exactly who was Vera C. Rubin? Just a girl who dreamed of space, ignored the haters, and grew up to be a world-class scientist.
Vera Rubin is best known for presenting the first sound evidence of dark matter—an elusive substance that makes up more than 80 percent of our universe, yet doesn’t interact with light or other electromagnetic radiation, making it impossible to glimpse directly through a telescope. Her central scientific accomplishment involved discovering a mismatch between the predicted angular motion of galaxies and the observed motion of galaxies. Rubin’s calculations offered a solution to this so-called “galaxy rotation problem” by suggesting that galaxies must contain at least 10 times as much mass as can be accounted for by the visible stars. This invisible mass constituted evidence for what astronomers had earlier proposed to be dark matter.
Rubin became a cosmological giant against the odds, illuminating a path for future female astronomers.
(And, I’d like to add, becoming a role model for kids of all shapes and sizes!) Want even more in-depth info about telescope and its capabilities?
In this exclusive interview, Professor Mario Jurić reveals how the Vera Rubin Observatory accidentally discovered 2,000 asteroids in just 10 hours while testing its capabilities on the distant Virgo Cluster—transforming humanity’s asteroid discovery rate from 20,000 per year globally to potentially over one million annually with a single telescope.
Short and very cool video of the Trifid and Lagoon nebulae, compiling more than seven hours of observing time: Trifid and Lagoon Nebulas (Video-ES).
Space Surveyors is a fun, interactive game where YOU move the Rubin telescope around the sky. How many stars, galaxies, supernovae, comets, and asteroids can you catch in one minute, before the sun rises?
While players aren’t moving the *real* telescope around, it’s still fun to play. (I discovered 22 objects before the clouds rolled in and the sun came up. Bet you can do better:)
Adventure! Discovery! Secrets of the universe! This, kids, is why math is important.*
* I mean, sure, also to figure out if you have enough money to pay rent and still buy ice cream, but also this!
Sadly, it looks like the Ispace lander Resilience did not make a successful landing on the moon yesterday. (If it did land, it’s harboring enough resentment about the process that it’s refusing to pick up the phone.)
Ispace has gone out of its way to make clear that it’s not giving up. The motto underpinning today’s mission was “never quit the lunar quest.” And by all accounts, the company has every intention of sticking with these moon missions until they succeed.
Let this be a lesson to all you aspiring creatives out there. Never quit! (And maybe name the next lander Persistence?)
The Resilience lander is currently orbiting the moon as it prepares to land within Mare Frigoris (“Sea of Cold”) in the northern hemisphere. The landing is scheduled for Thursday at 3:17 p.m. EDT (1917 GMT; or 4:17 a.m. Japan Standard Time on Friday, June 6)… If Resilience lands successfully, it is expected to operate for up to two weeks (one lunar day) on the moon’s surface before succumbing to the deep cold of lunar night.
That’s right, a private company is attempting a moon landing today. Is the privatization of space a good thing? A bad thing? It’s certainly an interesting progression of humanity’s extra-planetary exploration, always fascinating material for science fiction writers.
And we can watch!
(“the deep cold of lunar night”: is that a great phrase or what?)
Quick update: the landing time changed a bit due to orbital mechanics or something fancy like that, but more importantly, controllers are waiting to find out if it landed safely and can establish contact. Updates via CNN…
There was a second issue, too, called First Woman: Expanding Our Universe. Both were free and available to the public on NASA’s site. (Which makes sense, because NASA is paid for by US tax dollars, including mine.) Sadly, both have now been removed.
But good news, aspiring explorers! As highlighted over at Space.com, both issues are still available via that bastion of awesome, The Wayback Machine:
Issue #1: Dream to Reality follows Callie’s trailblazing path as the first woman on the Moon. Callie and her robot sidekick, RT, overcome setbacks, disappointment, and tragedy along the way. From her childhood dreams of space travel to being selected as an astronaut candidate, Callie takes us on her journey to the Moon.
I don’t always take the time to update older links, but I thought this one was important.
Because if humanity stops inspiring the next generation, humanity stops.
We’re heading into the end of the week and I don’t know about you, but I’m usually looking at my to do lists and wondering where the time has gone. (Also? I’m now convinced that meetings exist primarily to spawn more meetings.)
So, fine, maybe I haven’t accomplished everything I wanted to, but it’s not like I haven’t earned a little time for fun.
An extra bit of fun: And if you’ve always wondered how quickly you’d react to a lightsaber in the dark, or a TIE fighter arrowing out from behind a canyon wall, maybe you should try testing your Reaction Time. (That big blue bar at the top? Click that:)
This Earth Day, NASA is sharing how — by building on decades of innovation—we use the unique vantage point of space to observe and understand our dynamic planet in ways that we cannot from the ground.
We’re coming up on Easter weekend, which often means sugar-crazed energy spikes, loud family gatherings, and other high-energy experiences. If you happen to be an introvert, or just need a break with a bit of science in it, try going outside at night and doing a little meteor spotting.
“You’re not going to see meteors from downtown Manhattan or Central Park,” Cooke said. “You need to find the darkest sky you can, you need to lay flat on your back and look away from the moon.”
Give yourself 30 to 45 minutes for your eyes to adjust to the dark, Cooke said — and from there, simply enjoy the show.
And if you’re watching the sky this weekend, you may see the Lyrids overlap with another meteor shower, the Eta Aquariids, which is a thing I just learned about. For more on meteors and their schedules, visit the Meteor Shower Calendar from the American Meteor Society.
So lay back, relax, and wave hello to these visitors from outer space.
Observations by the James Webb space telescope of a planet called K2-18 b appear to reveal the chemical fingerprints of two compounds that, on Earth, are only known to be produced by life.
Is it life? Maybe yes, maybe no, but either way? It’s progress. Very cool progress!
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