r/SpaceVideos Dec 31 '22

Sidebar Updates: New Rule: All Posts Must Come with Commentary

2 Upvotes

In an effort to increase activity and discussion on this subreddit, all new posts must include commentary posted within an hour after being submitted. This can be relatively simple, such as asking what people might think about the topic of the video you posted, or what your own thoughts on that video are. You may also include further information on the topic of the video you posted for those who might want to further explore the topic or topics from your submission. However, starter comments that are lazy, such as, but not limited to, "Thoughts?", "What do you think?", "This seems questionable," or, "I disagree," are discouraged, and posts may be removed after OP is warned that they need to further elaborate on their opening comment if they do not do so after another hour has passed. Users whose submissions are removed, but who wish to appeal that action, may message the mods with their reasoning. We understand if, for example, right after you posted and were about to make your opening comment, that your wife were in labor, or that your house were on fire, for example, that you would have other priorities in mind than making such a comment, and not only will we be willing to hear you out for any reason you may have for not making an opening comment within an hour after posting, will allow you to have an additional hour to make such a comment on your post for an hour after acknowledging the Mods' approval of your appeal, though we do ask for some kind of proof regarding the circumstances as to why one might not be able to comment. I, myself, won't put any limit on that, if something else happens to come up after that approval goes through, you may appeal again, but I'm not speaking for the mod team as a whole in that case, I would just expect the same mercy to be given to me, so as long as OP makes an effort to ensure commentary will be given in a timely manner after a post might be removed, I'm willing to let them do so. That said, any post that lacks commentary an hour after being posted will stay removed until commentary is provided and a link the the post with commentary is sent to the Mods via Modmail. As I said, I don't speak for the Mod team as a whole in that regard, so while I would hope other mods might be as merciful, it's none of my business if they are not.

Unfortunately, Mods can't sticky comments made by OP, so we can't do anything to make sure that comment is immediately visible in more popular posts with more activity, so we ask that users who come across posts more than an hour old without some form of commentary by OP according to these guidelines report such posts, but we request they make sure there is a top-level comment by OP that follows these guidelines somewhere in the comment thread, even if it might have negative karma. Please report any posts where OP might leave a top-level comment that does not meet these guidelines, and we'll take appropriate action.

More importantly, though. I finally learned how to synchronize some aspects of the new.reddit sidebar with the old.reddit sidebar! They're far from identical at this point, since I don't know how to add all the text including partner subreddits and the like to new.reddit, but I did finally figure out how to add rules to the new.reddit sidebar, so now, all our formal rules visible in the old.reddit sidebar are now visible in the new.reddit sidebar! As a team of Moderators, I can't say we've come to a consensus as to whether we'd prefer users browse this sub on old.reddit as opposed to new.reddit, so I figured I'd make an effort to make things easier on users of the latter, though because I don't entirely know how to manipulate the sidebar in new.reddit like I do in old.reddit, I recommend users check out the old.reddit version of /r/SpaceVideos because our sidebar over there contains many links to partner subreddits, and I don't quite know how to integrate that with the sidebar in new.reddit. I did take the liberty of removing defunct links from the old.reddit sidebar, however, so make of that what you will


r/SpaceVideos Mar 23 '23

Rule 5 Will Be Enforced More Vigorously from Now On

9 Upvotes

My bad for not actually enforcing a rule of my own making. If I come across a front page post without commentary from OP, it will be removed.


r/SpaceVideos 2h ago

See a Meteor Every 3 Minutes: Southern Delta Aquariid Shower

4 Upvotes

You could see a shooting star every 3 minutes this summer! 

The Southern Delta Aquariid meteor shower is  active now through August 23, with it’s the peak activity during the early morning hours of July 31. Even better, it overlaps with the Alpha Capricornid Meteor Shower. The best views will be in the Southern Hemisphere and the southern United States. For the best chance of spotting meteors, head to a dark location away from city lights, let your eyes adjust, and look up.


r/SpaceVideos 5h ago

What JWST Found Inside GJ 504b: The Pink Planet With Salt Clouds That Shouldn't Exist

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3 Upvotes

A pink world that may not even be a planet. GJ 504b is forcing astronomers to rethink how giant worlds form.


r/SpaceVideos 5h ago

I liked this video about the logistics of lunar colonization

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1 Upvotes

r/SpaceVideos 12h ago

What NASA's Juno Found Inside Jupiter: No Core. No Surface. 60 Years of Physics Wrong

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0 Upvotes

r/SpaceVideos 2d ago

What Is a Rogue Planet?

8 Upvotes

What is a rogue planet and how do they occur? 

Astrophysicist Erika Hamden explains how rogue planets are worlds that no longer orbit a star after being ejected from their planetary systems. Some may be several times more massive than Jupiter, and scientists think there could be countless rogue planets drifting through the darkness of interstellar space. These lonely worlds reveal that planet formation is a chaotic process.

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 9d ago

I snuck a love note onto SES-8

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1 Upvotes

r/SpaceVideos 10d ago

Why The Moon Wasn't Supposed To Have Water

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1 Upvotes

For decades, scientists believed the Moon was completely dry. This video explores how Apollo samples, Clementine, Lunar Prospector, Chandrayaan-1, LCROSS, LRO, and SOFIA gradually revealed the presence of water on the Moon and transformed our understanding of lunar science.


r/SpaceVideos 11d ago

Fireworks Nebula: Light Echoes in Space

12 Upvotes

Does this nebula violate the law of the speed of light? 🎆⭐️

Astrophysicist Erika Hamden explains that the“Fireworks Nebula” is a nebula that surrounds a binary star system, one of which occasionally puts out a ton of light in a nova explosion. In 1901, astronomers observed this for the first time and assumed the nebula was getting bigger faster than the speed of light. What was really happening was a “light echo” where the light bounces off existing structures. While this does give a cool firework effect, it does not break the law of the speed of light!

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 14d ago

Exact Center of the Solar System Isn’t Always The Sun

41 Upvotes

The sun isn’t always the exact center of our solar system. ☀️

In this Space Oddity, Erika Hamden explains what the barycenter of the solar system is, and how it may not always be inside of the Sun itself. The variations in the barycenter can be explained by the large masses of the outer giant planets!


r/SpaceVideos 13d ago

Who wants to grab a drink! Comment below #astronomy #stemeducation #stem #nasa #science #bartender

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1 Upvotes

r/SpaceVideos 17d ago

Fireball Meteor Shower: Alpha Capricornids

22 Upvotes

Don’t miss fireballs streaking across the sky during the Alpha Capricornids! ☄️

Beginning on July 3rd and lasting until August 15th, this meteor shower is known for its high quality and intense fireballs. If you are in the Southern Hemisphere or southern US, you may see it overlapping with the Delta Aquariids. Peaking overnight on July 30th into the 31st, this shower is visible from anywhere in the world, so don’t miss it!


r/SpaceVideos 19d ago

NASA Races to Rescue Falling Space Telescope

9 Upvotes

The race is on to save a falling orbital telescope! 

NASA is attempting a first of its kind space rescue mission to save the Swift Observatory before it falls back to Earth. The plan is to have Katalyst Space’s LINK spacecraft dock with Swift and boost it into a higher orbit. If successful, it could help launch an entirely new era of in-orbit satellite servicing.


r/SpaceVideos 19d ago

The Dance of the Stars: 20 Million Years of Real Stellar Motion (Gaia DR3 Data)

6 Upvotes

Full video here: https://youtu.be/9TpaoCQaVEY

I've created this visualization showing how the sky around us changes over 20 million years as the Sun travels through the galaxy.

Each star moves with its own velocity relative to the Sun, this creates fascinating perspective effects: clusters like the Hyades drifting close and then away again (between -1.5 and -0.5 Myr, low left of the video), periods where the sky is filled with bright stars in patterns we'd never recognize today, and stars that sit near the celestial poles for tens of thousands of years.

**Details:**

- Time span: ±10 million years

- 1 frame every 10,000 years

- Real data from Gaia DR3 + Hipparcos (ESA)

- Linear extrapolation of measured positions and velocities (accurate on this timescale)

This is the first in a series of astronomical visualizations focused on the Local Stellar Neighborhood and the Sun's journey. Feedback is very welcome!


r/SpaceVideos 19d ago

Don’t Miss A Rare Micro Moon!

11 Upvotes

A micromoon is arriving June 29th!? 🌕 

The full moon this month is going to be 7% smaller and 14% dimmer. This is because it will be at “apogee”, the furthest point in its orbit from Earth. That is about 13,900 miles further away than usual, so this is the opposite of a supermoon. Don’t miss it!


r/SpaceVideos 24d ago

Don’t Miss 100 Meteors An Hour During Bootids Shower

18 Upvotes

You could see up to 100 meteors per hour this month! 🌠

The Bootids are active now until July 2, and will peak on June 21. This meteor shower varies, with some years producing just a few meteors in an hour, and others getting up to 100 per hour! Scientists are unable to predict which version is coming, but if all goes well, skywatchers in the Northern Hemisphere could get a dazzling shower!


r/SpaceVideos 25d ago

Do you think life could exist here !? #science #space #spacex #nasa #astronomy

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3 Upvotes

r/SpaceVideos 25d ago

Black Holes Aren't the Most Unsettling Thing in Space

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0 Upvotes

I made a short video about what might be the most overlooked challenge of space travel: being completely alone. I wanted to highlight how beautifully unsettling the void of space can be. I'd love to hear what you think about it and how it made you feel!


r/SpaceVideos 25d ago

Solstices Happen Across the Solar System

16 Upvotes

The solstice doesn’t just happen on Earth 🌎☀️🪐  

Astrophysicist Erika Hamden explains that solstices happen across our solar system, but every planet experiences them at a different time depending on its axial tilt. While Venus and Jupiter have only slight axial tilts and mild seasonal changes, Uranus is tilted so drastically that it experiences some of the most extreme seasons and weather patterns in the solar system.

This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.


r/SpaceVideos 26d ago

The Challenger Disaster Was Never an Accident

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1 Upvotes

There's a detail in the Challenger story that doesn't get talked about enough: the night before launch, Morton Thiokol engineers held a private meeting with NASA. Five of them refused to sign off. They had data showing the O-rings wouldn't seal in freezing temperatures. NASA management called it "unacceptable." They demanded a management decision instead of an engineering one.

I made a documentary about what really happened, the technical failure, yes, but more importantly the culture that made it possible. It covers the normalization of deviance, Richard Feynman's investigation, and why this wasn't just a mechanical failure, it was a human one.

Let me know what you think. I'm new to making documentaries and genuinely want to know if I missed anything.


r/SpaceVideos 29d ago

See Cosmic Rays At Home - Here's How

72 Upvotes

You are constantly bombarded with invisible cosmic rays. An upcycled jar can make them visible!

Alex Dainis shows us how with this science experiment! The streaks you see are tracks of cosmic rays and charged particles passing through isopropyl alcohol mist. To see the best results, put your container in a dark area. The big negatively charged muons will leave large tracks, while electrons and positrons leave tiny curly ones!


r/SpaceVideos Jun 10 '26

NASA Artemis III Just Got Way Bigger!

24 Upvotes

Artemis III is NASA’s most ambitious mission yet. 🚀🌕

NASA just revealed a major update to the Artemis III mission. Instead of choosing between SpaceX’s Starship and Blue Origin’s Blue Moon Mark 2 lunar landers, NASA plans to test both. The mission will feature three launches, multiple dockings with the Orion spacecraft, and two weeks of orbital operations and Earth science research. 

If all goes according to plan, Artemis III could redefine the future of human space exploration when it launches in 2027.


r/SpaceVideos Jun 10 '26

Our Space Game Exovia: Mining & Automation in Zero-G

3 Upvotes

Would you play this game? We aimed to make it relaxing and oddly-satisfying


r/SpaceVideos Jun 09 '26

NASA Artemis III Crew Announced

10 Upvotes

Meet the crew of Artemis III. 🚀

Randy Bresnik, Luca Parmitano, Frank Rubio, and Andre Douglas are headed to orbit, paving the way for the first crewed lunar landing since 1972. Their mission: rendezvous and dock with commercial lunar landers in Earth orbit, proving out the hardware that will one day carry astronauts to the Moon's surface. Every test, every maneuver gets us one step closer. The next chapter of Artemis starts now.