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SpaceX's triumph, exoplanets and mysterious killings: This week in space and science

A New era era in human spaceflight pic.twitter.com/BHsfg1zYLN [19659009] – Anne McClain (@AstroAnnimal) March 3, 2019 [19659010] Vice President Mike Pence called the astronauts at the station to congratulate them on this achievement and all that it means for the future. But Crew Dragon was not Ripley, a space-ready dummy named Ellen Ripley from the "Alien" movie. Ripley was meant to make sure that the spacecraft would be safe and comfortable for people. as head, neck and spine to see how the experience can be for astronauts who could use it later this year. And then there was Little Earth, an adorably wonderful plush toy representing ours The planet Earth, also called Buddy, has had an eventful week with the astronauts. While the Crew Dragon has returned to Earth with Ripley on board, Little Earth gets to enjoy a longer vacation to July. That means he'll see McClain and Christina Koch practicing the first female spacewalk this month. During the week, McClain shared wonderful pictures on Twitter of plushie accompanying her during missions, experiments, training, and even dinner. (1/2) The third day of the earth was busy! Briefings on how we handle junk and how to work with the controls for @csa_asc Canadarm2 (no, you can't take it for a ride!), Then a lesson on Soyuz descent with @Astro_DavidS (our lifeboat to get home in an evacuation, must keep the skills sharp) … pic.twitter.com/2n1hEZzj8J – Anne McClain (@AstroAnnimal) March 6, 2019 And Of course, Little Earth got to see the…

A New era era in human spaceflight pic.twitter.com/BHsfg1zYLN [19659009] – Anne McClain (@AstroAnnimal) March 3, 2019 [19659010] Vice President Mike Pence called the astronauts at the station to congratulate them on this achievement and all that it means for the future.

But Crew Dragon was not Ripley, a space-ready dummy named Ellen Ripley from the “Alien” movie.

Ripley was meant to make sure that the spacecraft would be safe and comfortable for people. as head, neck and spine to see how the experience can be for astronauts who could use it later this year.

And then there was Little Earth, an adorably wonderful plush toy representing ours The planet Earth, also called Buddy, has had an eventful week with the astronauts. While the Crew Dragon has returned to Earth with Ripley on board, Little Earth gets to enjoy a longer vacation to July. That means he’ll see McClain and Christina Koch practicing the first female spacewalk this month.

During the week, McClain shared wonderful pictures on Twitter of plushie accompanying her during missions, experiments, training, and even dinner.


And Of course, Little Earth got to see the Big Earth from the best vantage point. “Yes, buddy, it’s your Mother Earth. Isn’t she beautiful?” McClain tweeted, accompanied by an image that is too sweet for words.


You can capture the entire compilation of his big week here. And don’t worry, we continue to report on Little Earth’s shenanigans.

Shockwaves are beautiful

The speed of sound (not the Coldplay song) is associated with sonic bars and supersonic rays. But have you ever wondered what it looks like? Hint: You’ve never seen anything like this.

Sacred by NASA

It took 10 years to develop the technology that would allow aerial photography to capture the interaction of shockwaves from two supersonic planes. The two US Air Force T-38 supersonic jets performed a test flight in California flying 30 meters apart to create interactive shockwaves.

An aircraft from NASA B-200 King Air flew 2000 meters below the plane and captured images of 1,400 frames per second.

The shock waves seen in the image create supersonic barriers as they merge into the atmosphere, which breaks the sound barrier. Supersonic flights that do not make this sound, but rather a low room space, can lift the restrictions on supersonic flight over land. These images can help researchers to test and develop this technology.

“I’m ecstatic about how these pictures turned out,” J.T. Heineck, a researcher at NASA’s Ames Research Center, said in a statement. “We never dreamed it would be that clear, this beautiful.”

New choice, what is it?

A new type of choice has been discovered, “Type D” to be exact. What does it mean? Yes, type D whales look like killer whales or orcas, but they have a more rounded head, less white markings around the eyes and another body shape.

Killer Whale; NOAA

An international team of researchers discovered them off the Cape Horns coast in Chile and took small biopsies to study them.

“We are very pleased with the genetic analyzes that come,” said Bob Pitman, a researcher from the NOAA Fisheries “Southwest Fisheries Science Center, said in a release.” D-type puppies may be the largest undescribed animal left on the planet and a clear indication of how little we know about life in our oceans. “

Asteroid menace

Except that Hollywood was totally wrong about what it might be like to fly through an asteroid field (thanks” Star Wars “) , the film industry was also wrong at how easy it can be to wipe out an asteroid (thanks, “Armageddon”).

A new study simulated a small asteroid, with a diameter extending for a mile, colliding with a larger one about 16 miles over, the big asteroid was quite unharmed, Gravity can even help pull some disturbed fragments back together.

So it will take much more power and energy to destroy an asteroid that says you go to the earth. [19659002] To be able to sleep at night, NASA and other space organizations around the world focus on discovering the threat of near-Earth objects, asteroids and comets whose paths place them within 30 million miles of Earth.

How much would the Milky Way weigh if the Milky Way could be weighed?

Think of your free trivia tip: The Milky Way is heavy. But now scientists have a better idea of ​​how heavy it is.

Milky; CNN

It’s not as if the Milky Way, or even stars and planets, can be put on a scale. Using data from NASA’s Hubble Space Telescope and the European Space Agency’s Gaia satellite, astronomers have determined the most accurate measurement of its mass: Our large galaxies clock in at 1.5 trillion solar masses.

A solar mass is our mass of sun, which is 2 times 10 to 30th power ratio.

So where does all that weight come from? Surprisingly, only a small proportion of this is due to the galaxy’s 200 billion stars and the 4 million solar cell supermassive black hole in the middle. The rest of it depends on dark matter, the elusive substance that holds the universe.

Astronomers are still trying to find evidence of dark matter to see if it is a particle or something else. But they know it is present, even though it cannot be detected yet.

And as far as galaxies go, ours is heavy compared to others, but it is also appropriate considering how bright it is. Lighter galaxies weigh in about one billion solar masses. The heaviest is 30 trillion solar masses.

So, it’s as heavy as it needs to be.

Hot Jupiters, so hot right now

Congratulations is for Kepler-1658 b. It has finally been considered a planet after being discovered by the Kepler space telescope 10 years ago. Kepler’s mission revolutionized the search for other worlds outside our solar system and came to an end in October. Rest in peace, Kepler and thanks for all the exoplanets.

An artist’s concept of the Kepler-1658 system; CNN

It’s rare, a hot Jupiter around a developed underground star with an incredibly close orbit that flings it around every third day.

Hot Jupiters – gas giants similar to our own system’s largest plane but much closer to their host stars – were common discoveries during the early days of exoplanet hunting because they were easy to find, but they represent only about 1% of known exoplanets now.

The star has 50% more mass than our sun and it is three times larger. The planet orbits close, only about twice the star diameter away from it. This makes the planet one of the closest host star, which is a more developed star that reflects what our sun will be like in the future.

If you could stand on the planet, the star would appear 60 times larger in diameter than the sun sees when we see it from the earth.

The artist’s impression of life on a planet in orbit around a binary star system, visible as two sunbeams in the sky; Mark Garlick via CNN

Another study this week suggested that binary or two-star systems could host planets that are more likely to be in the habitable zone – the Goldilocks site that is not too hot or cold and can support floating water on the surface. It is called the habitable zone because we equate the presence of water with the possibility of life.

So the beautiful double sunset from “New hope” can mean that there is a better chance for life, even though the “sand gets everywhere” on Tatooine. There is at least life.

CNN-Wire ™ and © 2018 Cable News Network, Inc., a Time Warner Company. All rights reserved.

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