#spacecraft | Explore Tumblr Posts and Blogs

whereserpentswalk · 21 hours

Text

There are massive warships. Things that are the size of stations but that can move more swiftly through hyperspace and real space than any other object created by humans or gods. They're not like the warships you imagine, they're like entire divisions of the military, some of them have the populations of small planets, the largest of them have populations higher then earth had before industry came to it.

It only takes one of these ships to comquor a system. Though they often have smaller ships swarming them, like the microorganisms on your skin. And when they fight eachother, holes are torn in hyperspace, and heavily bodies become asteroid belts. Even the weapons that can destroy planets can't take ships like this down in one hit.

Inside the ships are entire societies, of humans, cyborgs, robots, and strange organisms generated by human science. Many of them soldiers who exist to serve as the ships troops, especially since a boarding action is the fastest way to take them down, but many are there for other reasons. You need an entire society to support a ship like that and all the troops it can carry, from workers who maintain the ship, to traders who bring new recourses on, to artists and teachers and lawyers and all the other things that end up as needed when there's that many people.

Some of these ships are so large and so deep that there are people on there who've never seen the world outside their machines of war. And some isolated parts of those ships, who've been within the depths of the endless machinery for so long, that they've lost contact with the more outwards facing parts of the ship society. Tribes and towns within the dark mechanical labyrinth who don't know they're on a warship, who don't even know planets exist.

And they say, that as the loyalty of a ship fades from the empire that built it, that the ship may come to be controlled by many nations, vying for control of the ship's flight. They say that within the depths of some war ships, wars are fought.

108 notes · View notes

mysticstronomy · 2 days

Text

IS TIME AN ILLUSION??

Blog#393

Wednesday, April 17th, 2024.

Welcome back,

Why is time controversial? It feels real, always there, inexorably moving forward. Time has flow, runs like a river. Time has direction, always advances. Time has order, one thing after another. Time has duration, a quantifiable period between events. Time has a privileged present, only now is real. Time seems to be the universal background through which all events proceed, such that order can be sequenced and durations measured.

The question is whether these features are actual realities of the physical world or artificial constructs of human mentality. Time may not be what time seems — this smooth unity without parts, the ever-existing stage on which all happenings happen.

To appreciate time is to feel the fabric of reality. I interview physicists and philosophers on my public television series, "Closer to Truth," and many assert that time is an illusion. What do they mean that time is "not real?"

Huw Price, professor of philosophy at Cambridge University, claims that the three basic properties of time come not from the physical world but from our mental states: A present moment that is special; some kind of flow or passage; and an absolute direction.

"What physics gives us," Price said, "is the so-called 'block universe,' where time is just part of a four-dimensional space-time … and space-time itself is not fundamental but emerges out of some deeper structure."

We sense an "arrow" or direction of time, and even of causation, he said, because our minds add a "subjective ingredient" to reality, "so that we are projecting onto the world the temporal perspective that we have as agents

Think of the block universe, which is supported by Einstein's theory of relativity, as a four-dimensional space-time structure where time is like space, in that every event has its own coordinates, or address, in space-time.

Time is tenseless, all points equally "real," so that future and past are no less real than the present.

So, are we being misled by our human perspectives? Is our sense that time flows, or passes, and has a necessary direction, false? Are we giving false import to the present moment?

"We can portray our reality as either a three-dimensional place where stuff happens over time," said Massachusetts Institute of Technology physicist Max Tegmark, "or as a four-dimensional place where nothing happens [‘block universe’] — and if it really is the second picture, then change really is an illusion, because there's nothing that's changing; it's all just there — past, present, future.

"So life is like a movie, and space-time is like the DVD," he added; "there's nothing about the DVD itself that is changing in any way, even though there's all this drama unfolding in the movie. We have the illusion, at any given moment, that the past already happened and the future doesn't yet exist, and that things are changing. But all I'm ever aware of is my brain state right now. The only reason I feel like I have a past is that my brain contains memories.

"Time is out there," said Andreas Albrecht, a theoretical cosmologist at the University of California, Davis. "It's called an external parameter — the independent parameter in the [classic] equation of motion. So, time — the time we know since we learned to tell time on a clock — seems to disappear when you study physics, until you get to relativity.

Originally published on https://www.space.com

COMING UP!!

(Saturday, April 20th, 2024)

"WHAT IS THE SLOWEST THING IN THE UNIVERSE??"

#astronomy #outer space #alternate universe #astrophysics #universe #spacecraft #white universe #space #parallel universe #astrophotography #time and space #time

69 notes · View notes

beverlyartblog · 3 days

Text

I've long had this idea in my head for spaceships inspired by anvil-shaped cumulonimbus clouds. These are the first two proper renderings of the concept.

I think there'd be just a few of these, each of a unique shape. Each one is a generation ship the size of a small city, capable of travelling through a hyperspace/slipspace type of dimension at great cost. Everywhere they go, they act as the base of operations for a resource collection operation taking many years, eventually gathering enough energy to make another jump and repeat the cycle. Who knows why they go where they do?

#beverlyartblog #digital art #space #art #worldbuilding #digital painting #spaceship #cumulonimbus #science fiction #sci fi #spacecraft #planets #hyperspace #warp drive

45 notes · View notes

nasa · 5 months

Text

Moonbound: One Year Since Artemis I

On this day last year, the Artemis I rocket and spacecraft lit up the sky and embarked on the revolutionary mission to the Moon and back. The first integrated flight test of the rocket and spacecraft continued for 25.5 days, validating NASA’s deep exploration systems and setting the stage for humanity’s return to the lunar surface.

On Nov. 16, 2022, the Space Launch System (SLS) rocket met or exceeded all expectations during its debut launch on Artemis I. The twin solid rocket booster motors responsible for producing more than 7 million pounds of thrust at liftoff reached their performance target, helping SLS and the Orion spacecraft reach a speed of about 4,000 mph in just over two minutes before the boosters separated.

Quite a few payloads caught a ride aboard the Orion spacecraft on the Artemis I mission: In addition to a number of small scientific satellites called CubeSats, a manikin named Commander Moonikin Campos sat in the commander’s seat. A Snoopy doll served as a zero-gravity indicator — something that floats inside the spacecraft to demonstrate microgravity.

During the mission, Orion performed two lunar flybys, coming within 80 miles of the lunar surface. At its farthest distance during the mission, Orion traveled nearly 270,000 miles from our home planet, more than 1,000 times farther than where the International Space Station orbits Earth. This surpassed the record for distance traveled by a spacecraft designed to carry humans, previously set during Apollo 13.

The Orion spacecraft arrived back home to planet Earth on Dec. 11, 2022. During re-entry, Orion endured temperatures about half as hot as the surface of the Sun at about 5,000 degrees Fahrenheit. Within about 20 minutes, Orion slowed from nearly 25,000 mph to about 20 mph for its parachute-assisted splashdown.

Recovery teams successfully retrieved the spacecraft and delivered it back to NASA’s Kennedy Space Center for de-servicing operations, which included removing the payloads (like Snoopy and Commander Moonikin Campos) and analyzing the heat shield.

With the Artemis I mission under our belt, we look ahead to Artemis II — our first crewed mission to the Moon in over 50 years. Four astronauts will fly around the Moon inside Orion, practicing piloting the spacecraft and validating the spacecraft’s life support systems. The Artemis II crew includes: NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, and CSA astronaut Jeremy Hansen.

youtube

As we look ahead to Artemis II, we build upon the incredible success of the Artemis I mission and recognize the hard work and achievements of the entire Artemis team. Go Artemis!

Make sure to follow us on Tumblr for your regular dose of space!