NewsPronto

 
Men's Weekly

.

USA Conversation

The Conversation USA

The Conversation USA

Why are some black holes bigger than others? An astronomer explains how these celestial vacuums grow

  • Written by Jaclyn Champagne, JASPER Postdoctoral Researcher, University of Arizona
imageBlack holes use gravity to pull matter into them. NASA/Chandra X-ray Observatory/M.Weiss via APimage

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.


Why are there small and big black holes? Also, why are some black holes invisible and others have...

Read more: Why are some black holes bigger than others? An astronomer explains how these celestial vacuums grow

More Articles ...

  1. Do you hear what I see? How blindness changes how you process the sound of movement
  2. More vulnerable people live in Philadelphia neighborhoods that are less green and get hotter
  3. A bottle of scotch recently sold for $2.7 million – what's behind such outrageous prices?
  4. After 50 years of global effort to abolish torture, much work remains
  5. Students could get more sleep and learn better if school started a little later
  6. Paying people to replant tropical forests − and letting them harvest the timber − can pay off for climate, justice and environment
  7. 100 years ago, the KKK planted bombs at a U.S. university – part of the terror group's crusade against American Catholics
  8. 100 years ago, the KKK planted bombs at a US university – part of the terror group's crusade against American Catholics
  9. 5 things to know about US aid to Ukraine
  10. A US ambassador working for Cuba? Charges against former diplomat Victor Manuel Rocha spotlight Havana's importance in the world of spying
  11. Racism produces subtle brain changes that lead to increased disease risk in Black populations
  12. As Russia ramps up 'traditional values' rhetoric − especially against LGBTQ+ groups − it's won Putin far-right fans abroad
  13. War in Gaza: An ethicist explains why you shouldn't turn to social media for information about the conflict or to do something about it
  14. Sandra Day O’Connor saw civics education as key to the future of democracy
  15. How to provide reliable water in a warming world – these cities are testing small-scale treatment systems and wastewater recycling
  16. Mutton, an Indigenous woolly dog, died in 1859 − new analysis confirms precolonial lineage of this extinct breed, once kept for their wool
  17. Release of Alberto Fujimori in Peru rekindles fears of backsliding on human rights
  18. When authoritative sources hold onto bad data: A legal scholar explains the need for government databases to retract information
  19. Winter brings more than just ugly sweaters – here's how the season can affect your mind and behavior
  20. Artificial light lures migrating birds into cities, where they face a gauntlet of threats
  21. Why federal efforts to protect schools from cybersecurity threats fall short
  22. 4 business lessons from the Boston Tea Party
  23. In the worst of America's Jim Crow era, Black intellectual W.E.B. Du Bois found inspiration and hope in national parks
  24. Is Hamas the same as ISIS, the Islamic State group? No − and yes
  25. CRISPR and other new technologies open doors for drug development, but which diseases get prioritized? It comes down to money and science
  26. Lighting a fire using friction requires an understanding of some physics principles − but there are ways to make the process easier
  27. ¿La mejor manera de cumplir un propósito de Año Nuevo? Haga un propósito de año viejo
  28. Por qué a los primeros cristianos no les habría sorprendido tanto el nacimiento virginal de la historia de Navidad
  29. Israel can and will ignore US appeals to minimize casualties in Gaza
  30. How the Boston Tea Party's 'destruction of the tea' changed American history
  31. Drinking during holidays and special occasions could affect how you parent your kids
  32. Big-box retail chains were never a solution for America's downtowns − and now they're fleeing back to suburbia
  33. A road map for the lawful use of stop-and-frisk in Philadelphia – and elsewhere
  34. Health misinformation is rampant on social media – here's what it does, why it spreads and what people can do about it
  35. Growth of autocracies will expand Chinese global influence via Belt and Road Initiative as it enters second decade
  36. Nonalcoholic beer: New techniques craft flavorful brews without the buzz
  37. 'Good Times': 50 years ago, Norman Lear changed TV with a show about a working-class Black family's struggles and joys
  38. Arctic Report Card 2023: From wildfires to melting sea ice, the warmest summer on record had cascading impacts across the Arctic
  39. Israelis and Palestinians warring over a homeland is far from unique
  40. Israel-Hamas war may not restore Israelis' support for military reserves
  41. Could UPS and FedEx get holiday packages to their destinations faster? This research suggests yes
  42. Before he was House speaker, Mike Johnson represented a creationist museum in court. Here’s what that episode reveals about his politics
  43. Scientists and space agencies are shooting for the Moon -- 5 essential reads on modern lunar missions
  44. Customizing mRNA is easy, and that's what makes it the next frontier for personalized medicine − a molecular biologist explains
  45. What's the point of giving gifts? An anthropologist explains this ancient part of being human
  46. Why university presidents find it hard to punish advocating genocide − college free speech codes are both more and less protective than the First Amendment
  47. Was King Herod the Great really so 'great'? What history says about the bad guy of the Christmas story
  48. Hamas' use of sexual violence is an all-too-common part of modern war – but not in all conflicts
  49. 'You reach a point where you have nothing. You will just die' – in East African refugee camps, food scarcity is a mortal concern
  50. Israel's mass displacement of Gazans fits strategy of using migration as a tool of war