43 results for astronomy.com:

PlaidBastard t1_itpz0pq wrote on October 25, 2022 at 1:38 PM

Reply to If you lived on a planet in the center of the Milky Way would the nighttime be significantly brighter compared to Earth’s nighttime due to the larger concentration of stars? by bad_take_

little googling got me this: https://astronomy.com/magazine/ask-astro/2006/01/how-close-can-stars-get-to-each-other-in-galaxy-cores TLDR; stars only 860 AU (Earth-Sun distances) apart instead of 5 lightyears (360 times further) means *probably* no planets in the first place, but pretending there

KnotSoSalty t1_iuphn42 wrote on November 2, 2022 at 1:46 AM

Reply to comment by 1Land_1Keep in 'The Winchesters' plot holes and retconning might be a sign that the story takes place in an alternate universe from 'Supernatural' by sundaynightheat99

Parsec [still is related to the radius of the earth’s orbit however. ](https://astronomy.com/magazine/ask-astro/2020/02/why-is-a-parsec-326-light-years)

SandyDelights t1_ivjnutq wrote on November 8, 2022 at 1:45 PM

Reply to comment by go_half_the_way in Bizarre star may have a solid surface, according to X-ray observations. Astronomers have now spotted a super strange one that seems to have a solid surface. Its intense magnetic field is strong enough to overcome its blistering temperatures and “freeze” its outer layers into a solid crust. by MistWeaver80

That said, yes, but there are a lot of caveats – [this article covers it](https://astronomy.com/magazine/ask-astro/2005/03/if-neutron-stars-dont-produce-energy-from-fusion-like-normal-stars-how-can-they-shine-in-visible-light) really well and in fairly simple terms

toolsforconviviality t1_iw4fbay wrote on November 12, 2022 at 9:50 PM

Reply to Will mankind ever travel outside our solar system? by savol_

Alpha Centauri. There are some material science challenges to overcome but the biggest barrier is funding. https://astronomy.com/magazine/news/2021/06/breakthrough-starshot-a-voyage-to-the-stars-within-our-lifetimes

ecdaniel22 t1_j1hdwk4 wrote on December 24, 2022 at 10:33 AM

Reply to What happens when galaxies are passing by each other, and 2 stars smack into one another? by Kitkatphoto

have stars collide with each other because of generally they have dark matter halos. https://astronomy.com/magazine/ask-astro/2020/05/what-would-happen-if-two-stars-collided

woolcoat t1_j1zyw39 wrote on December 28, 2022 at 5:39 PM

Reply to comment by All_Usernames_Tooken in Saudi Arabia in talks over plans for next-generation space stations. Saudi space official lays out ambitions for commercial ventures among the stars. by jivatman

They'll just pay China for the privilege of doing this. See: UAE already paying China - [https://astronomy.com/news/2022/10/united-arab-emirates-expands-lunar-plans-with-chinese-collaboration](https://astronomy.com/news/2022/10/united-arab-emirates-expands-lunar-plans-with-chinese-collaboration) China just completed it's first real space station and is thinking about expanding

Weed_O_Whirler t1_j4w0gjz wrote on January 18, 2023 at 5:29 PM

Reply to Whats stopping us from sending a probe into a black hole if we haven't already? by stealth941

closest known blackhole to Earth is 400 times further away from Earth than Alpha Proxima.](https://astronomy.com/news/2022/11/sun-like-star-found-orbiting-closest-black-hole-to-earth). Of course, even if we got a probe there, it would have to have more power than

Weed_O_Whirler t1_j512ikh wrote on January 19, 2023 at 5:40 PM

Reply to comment by -YellsAtClouds- in Whats stopping us from sending a probe into a black hole if we haven't already? by stealth941

voyager spacecraft are [well above the Solar escape velocity](https://astronomy.com/magazine/ask-astro/2019/01/no-returns) so they will be traveling on out of here

z57 t1_j5183wk wrote on January 19, 2023 at 6:13 PM

Reply to Ancient humans and their early depictions of the universe: “It is no exaggeration to say that astronomy has existed as an exact science for more than five millennia,” writes the late science historian John North. by clayt6

More like twelve millennia. As Göbekli Tepe shows https://astronomy.com/news/2020/09/gobekli-tepe-the-worlds-first-astronomical-observatory

Throwaway08080909070 t1_je2tfuy wrote on March 29, 2023 at 12:16 AM

Reply to comment by [deleted] in ELI5: How come the Earth's oxygen content isnt decreasing when everyday we have millions of engines consuming tons of ? by abrandis

take a moment to learn about this subject, it's a fascinating one. https://www.scirp.org/journal/paperinformation.aspx?paperid=108262 https://astronomy.com/magazine/ask-astro/2012/01/collisions-happen https://en.wikipedia.org/wiki/Annihilation https://en.wikipedia.org/wiki/Matter_creation

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43 results for astronomy.com: