KREUZADER (Posts tagged space)

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See, that’s what the app is perfect for.

Sounds perfect Wahhhh, I don’t wanna
nmpositive
goawfma

being lex luthor kinda sorta requires being a genius, elon musk got start up cash because his family stole an emerald mine from zambian miners 🤷🏾 nothing but wealth and privilege

goldhornsandblackwool

I saw this tweet earlier today and took psychic damage for 5 hours.

this idiot is the worst but also fuck the entire fetishistic silicon valley fanatacism that made him possible.

resplendentgoldenwings

As it happens there are some fairly simple solutions to this problem and it’s not to late to deploy them.

https://www.forbes.com/sites/startswithabang/2019/11/20/this-is-how-elon-musk-can-fix-the-damage-his-starlink-satellites-are-causing-to-astronomy/#5a5184974ccc

airyairyaucontraire

I would also like it if one or more of the satellites simply fell on him.

space astronomy satellites elon musk
A Closer Look at an Interstellar Comet The interest in ‘Oumuamua and comet 2I/Borisov makes it clear that interstellar neighbors wandering into our system generate loads of media coverage. And why not: Here is a way to study material from another...

A Closer Look at an Interstellar Comet

The interest in ‘Oumuamua and comet 2I/Borisov makes it clear that interstellar neighbors wandering into our system generate loads of media coverage. And why not: Here is a way to study material from another stellar system while remaining within our own. 2I/Borisov, for example, reaches its closest approach to Earth in early December, closing to within roughly 300 million kilometers. Whatever pushed an object like this out of the parent system cannot be known, but we’re likely dealing with gravitational disruption related to planets in the birth system. But more about that in a moment.

For thanks to Yale University astronomers Pieter van Dokkum, Cheng-Han Hsieh, Shany Danieli, and Gregory Laughlin, we have a fine new image of 2I/Borisov. This was taken on November 24 using the W.M. Keck Observatory’s Low-Resolution Imaging Spectrometer in Hawaii. The tail of the comet, according to van Dokkum, is about 160,000 kilometers long.

Source: centauri-dreams.org
comet space astronomy
The Milky Way Has Giant Bubbles at Its Center New observations of the galactic center have revealed a pair of giant bubbles at the center of the Milky Way that give off radio emissions, according to recent research published in Nature. The bubbles...

The Milky Way Has Giant Bubbles at Its Center

New observations of the galactic center have revealed a pair of giant bubbles at the center of the Milky Way that give off radio emissions, according to recent research published in Nature. The bubbles stretch outward from the black hole and extend into space in opposite directions. The billowy lobes resemble the two halves of an hourglass, with the black hole nestled at its waist.

Source: The Atlantic
astronomy space radio astronomy
The Gran Telescopio Canarias (GTC) obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet Miquel Serra Ricart points out that “the image of C/2019 Q4 shows a cometary object, with well-defined coma and tail”....

The Gran Telescopio Canarias (GTC) obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet

Miquel Serra Ricart points out that “the image of C/2019 Q4 shows a cometary object, with well-defined coma and tail”. Julia de León adds that “the spectrum of this object is similar to those of Solar System comets and this indicates that their composition must be similar”.

Source: iac.es
astronomy comet comet borisov borisov space
Hubble telescope spies water raining on distant world The discovery is a rare glimpse of water molecules around a distant world that is not much bigger than Earth. Named K2-18 b, the planet is 34 parsecs (110 light-years) from Earth in the...

Hubble telescope spies water raining on distant world

The discovery is a rare glimpse of water molecules around a distant world that is not much bigger than Earth. Named K2-18 b, the planet is 34 parsecs (110 light-years) from Earth in the constellation Leo. Notably, it lies in the ‘habitable zone’ around its star — the distance at which liquid water could exist, making extraterrestrial life possible in its hydrogen-rich atmosphere.

“That’s the exciting thing about this planet,” says Björn Benneke, a planetary astronomer at the University of Montreal in Canada. He is the lead author of a paper describing the discovery that was posted on the arXiv preprint server on 10 September1.

Source: nature.com
exoplanet astronomy space
LightSail 2 Spacecraft Successfully Demonstrates Flight by Light Years of computer simulations. Countless ground tests. They’ve all led up to now. The Planetary Society’s crowdfunded LightSail 2 spacecraft is successfully raising its orbit solely on...

LightSail 2 Spacecraft Successfully Demonstrates Flight by Light

Years of computer simulations. Countless ground tests. They’ve all led up to now. The Planetary Society’s crowdfunded LightSail 2 spacecraft is successfully raising its orbit solely on the power of sunlight.

Since unfurling the spacecraft’s silver solar sail last week, mission managers have been optimizing the way the spacecraft orients itself during solar sailing. After a few tweaks, LightSail 2 began raising its orbit around the Earth. In the past 4 days, the spacecraft has raised its orbital high point, or apogee, by about 2 kilometers. The perigee, or low point of its orbit, has dropped by a similar amount, which is consistent with pre-flight expectations for the effects of atmospheric drag on the spacecraft. The mission team has confirmed the apogee increase can only be attributed to solar sailing, meaning LightSail 2 has successfully completed its primary goal of demonstrating flight by light for CubeSats.

Source: planetary.org
lightsail 2 space
The Lyman‐α Sky Background as Observed by New Horizons Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented. The...

The Lyman‐α Sky Background as Observed by New Horizons

Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented. The observations include regularly spaced great circle scans of the sky and pointed observations near the downstream and upstream flow directions of interstellar H atoms. The New Horizons Alice data agree very well with the much earlier Voyager UVS results, after these are reduced by a factor of 2.4 in brightness, in accordance with recent reanalyses. In particular, the falloff of interplanetary medium Lyman‐α brightness in the upstream‐looking direction as a function of spacecraft distance from the Sun is well matched by an expected 1/r dependence, but with an added constant brightness of ~40 Rayleighs. This additional brightness is a possible signature of the hydrogen wall at the heliopause or of a more distant background. Ongoing observations are planned at a cadence of roughly twice per year.

Source: agupubs.onlinelibrary.wiley.com
space new horizons
An asteroid just buzzed past Earth, and we barely noticed in time A 100-metre-wide asteroid passed just 70,000km from Earth on Thursday, Australian time. It was discovered by the Brazilian SONEAR survey just days ago, and its presence was announced...

An asteroid just buzzed past Earth, and we barely noticed in time

A 100-metre-wide asteroid passed just 70,000km from Earth on Thursday, Australian time. It was discovered by the Brazilian SONEAR survey just days ago, and its presence was announced mere hours before it zoomed past our planet. The lack of warning shows how quickly potentially dangerous asteroids can sneak up on us.

The asteroid, reassuringly designated 2019 OK, is not a threat to Earth right now. However, 2019 OK and other near-Earth asteroids do pose a genuine risk. The Tunguska explosion in 1908 and the Chelyabinsk meteor in 2013 were equivalent to large nuclear explosions, and under the wrong circumstances a meteor impact could devastate a city.

Source: theconversation.com
asteroid astronomy space planetary defense
How Could We Decode A Message From Extraterrestrials? If we were to find a signal, we would first need to determine if it is actually from an extraterrestrial intelligence, or if it is from some more natural source. What do scientists in the real...

How Could We Decode A Message From Extraterrestrials?

If we were to find a signal, we would first need to determine if it is actually from an extraterrestrial intelligence, or if it is from some more natural source. What do scientists in the real world look for?  

“People think we’re looking for the value of pi, the Fibonacci series, prime numbers,  Shakespeare sonnets, whatever.  But none of that is true,” says Dr. Seth Shostak, a Senior Astronomer at the SETI Institute.  Scientists in the real world, he explains, look for something very simple - is the signal narrow band?  In other words, do we see the signal at just a very narrow range of frequencies?   Just like tuning to your favorite station on the radio, a signal from an extraterrestrial intelligence wouldn’t be expected to be blasted at every frequency.   Broadcasting with a wide range of frequencies is technically difficult and expensive, both on Earth and on another planet.  Natural signals, on the other hand, would be found at a range of frequencies, from stars to pulsars.

Source: forbes.com
seti astronomy space