The Planets That Can Dwarf Stars | Size Comparison

What makes a planet a planet? And what makes a star a star? Once we know this these defining characteristics, we start to notice that these definitions can overlap. Which begs the question, can a planet be bigger than its parent star?

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Image Credits: NASA/ESO/ESA/Hubble/Space Engine/Universe Sandbox
Music Credits: Marek Poledna

[astrumspace]

Hi subscribers! This is a reupload of a video I released earlier this year which I had been meaning to reupload for a while. As it happened, there was some new and exciting relevant information released just yesterday from NASA about WD 1856 b which I have now included in the video. The old version had a pretty major mistake in it, where I said a neutron star is 10-29 solar masses, which is actually the mass range of the stars neutron stars originate from, so that has also been corrected. I will soon unlist the old version. Enjoy if you have never seen this before!

[otheraccount]

2:02

We have all heard the factoid that if you were to put a neutron star next to the Earth, its magnetic field would draw the iron straight out of your blood.

I say that if you were to put a neutron star next to the Earth, then having all the iron removed from your blood would be the least of your problems.

[gabrielhermesson]

4:38 the transition to the HR diagram is sick

[mr.panda_]

If you think about it, there are plenty of astronomical bodies just floating out there in the unerverse that are not stars. The only reason we have not been able to find any of these bodies, is because the do not admit light. That makes searching for then 10000x harder

[bulbasaurvines]

That animation of the Hertzsprung Russell Diagram is so cool!!!

[Patrick-S]

Planet: "Look at me, I am the star now".

[phaslow]

I can't wait for your take on the Venus discovery!

[gamingwithnate]

I tend to like the videos before I watch them because I already know they're going to be great.

[FaizanAzad.]

Love From India🇮🇳
We Love Your All Space Series

[CrankyPantss]

That was very well done, as always. Thanks for going back and fixing the first version of this. It says a lot that you care enough to do that.

[lizzzzzzzz]

i just wanted to say how much i enjoy your videos. when i really started becoming interested in space, i was also just beginning to use youtube. your channel was the first one i really started following - this was back in 2015. i love how you post so often now and continue to wow me with your ability to explain the subject matter in such an interesting way with beautiful pictures and production. i have learned so much! thanks again :)

[carlcard]

Fascinating stuff, I honestly regret not pursuing Astronomy .... love this stuff

[jasmijnariel]

How big can planets grow?

*talks about stars for 7minutes long*

[jerry]

I do remember watching this, but will happily watch it again since I watched it a couple months ago or so

[AstrolabMalaysia]

Dropping by to say Hi to my Astro partner.
Hi Astrum !

[geoffstrickler]

Short answer, there are known stars with a radius very near the radius of Jupiter. There are a number of exoplanets documented well enough have confidence they are 1.7x-3.0x the radius of Jupiter. There are also a number of stars believed to have radius smaller than Jupiter. So, while not 100% certain, there is strong evidence that the largest planets are larger than the smallest stars, including some red dwarf stars.

[dexlsp]

2:12 Whoa, that neutron star is directly above me and now I'm dead! (I'm from SF) 😂

[genaricTallGuy]

To be honest, I zone out listening to you sometimes, just gazing at the cool pictures lol

[jbkhan]

This is hands-down one of my favorite channels... really exceptional content. It always make me laugh because the narrator's (Alex's) manner of speaking reminds me of Jemaine Clement playing the crab in the movie Moana. I always get a chuckle out of the image of the crab from Moana narrating these videos. Just a funny mental image though, all the love for Alex and this channel!

[MichelleIbarraMHAEdD]

Really love your videos, you do a fantastic job! Your narration is soothing and very professional, you should do voice overs or ASMR videos!