NewsPronto

 
The Times


.

USA Conversation

The Conversation USA

The Conversation USA

Why does a rocket have to go 25,000 mph to escape Earth?

  • Written by Benjamin L. Emerson, Principal Research Engineer, School of Aerospace Engineering, Georgia Institute of Technology
imageA SpaceX Falcon 9 rocket with its Crew Dragon capsule launches from Cape Canaveral, Fla., in January 2024.Chandan Khanna/AFP via Getty Images

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 does a rocket have to go 25,000 mph (about...

Read more: Why does a rocket have to go 25,000 mph to escape Earth?

More Articles ...

  1. From watts to warheads: Secretary of energy oversees big science research and the US nuclear arsenal
  2. Secretary of defense must perform a ‘delicate dance’ between the president, Congress and the public
  3. Wildfires can contaminate drinking water systems with harmful chemicals − here’s what Los Angeles needs to know
  4. Philly sports fans consider themselves ‘gritty’ − but it’s merely a myth used to fuel their passion
  5. An eye for an eye: People agree about the values of body parts across cultures and eras
  6. How the EPA administrator protects public health, air, water and the environment
  7. With more Americans able to access legalized marijuana, fewer are picking up prescriptions for anti-anxiety medications – new research
  8. Even 1 drink a day elevates your cancer risk – an expert on how alcohol affects the body breaks down a new government report
  9. Funding public schools based on enrollment in the previous year may help keep their budgets more stable, research shows
  10. Many ‘impact investors’ aren’t fully tracking whether their investments are good for society or the environment − new research
  11. From anecdotes to AI tools, how doctors make medical decisions is evolving with technology
  12. Southern California is extremely dry, and that’s fueling fires − maps show just how dry
  13. Trump gets an ‘unconditional discharge’ in hush money conviction − a constitutional law expert explains what that means
  14. Wildfire smoke inside homes can create health risks that linger for months − tips for cleaning and staying safe
  15. How the U.S. could in fact make Canada an American territory
  16. 2024’s extreme ocean heat leaves 2 mysteries to solve
  17. 2024’s extreme ocean heat breaks records again, leaving 2 mysteries to solve
  18. Trump’s Greenland bid is really about control of the Arctic and the coming battle with China
  19. Germany and US have long been allies - that could change with Trump
  20. Birkin handbags, Walmart’s ‘Wirkin’ and the meme-ification of class warfare
  21. How midlife became a crisis
  22. Trees ‘remember’ wetter times − never having known abundant rain could buffer today’s young forests against climate change
  23. I study modern-day slavery − and here’s what I’ve learned about how enslavers try to justify their actions
  24. 3 myths about rural education that are holding students back
  25. How the world fell in love with plastic without thinking through the consequences – podcast
  26. How Santa Ana winds fueled the deadly fires in Southern California
  27. Trump won’t rule out force to take Greenland – a country with a complex colonial history
  28. Trump’s push to control Greenland echoes US purchase of Alaska from Russia in 1867
  29. Want to quit vaping this year? Here’s what the evidence shows so far about effective strategies
  30. 3 ways Trump’s EPA could use the language of science to weaken pollution controls
  31. Logging off life but living on: How AI is redefining death, memory and immortality
  32. Nuclear fusion could one day be a viable clean energy source – but big engineering challenges stand in the way
  33. Selfish or selfless? Anti-natalists say they’re going child-free to protect the kids they won’t have
  34. Interior secretary manages vast lands that all Americans share − and can sway the balance between conservation and development
  35. Gender balance in computer science and engineering is improving at elite universities but getting worse elsewhere
  36. Who owns that restaurant? The answer can affect food safety in unexpected ways, researchers find
  37. Jean-Marie Le Pen died knowing his extremist far-right politics have been successfully mainstreamed in France
  38. Vitamin deficiency may be why you’re so tired – a nutritional neuroscientist explains how to kickstart your energy by getting essential nutrients in a well-rounded diet, along with more sleep and exercise
  39. Unlikely bedfellows: How platform companies shortchange porn performers and ride-hailing drivers alike
  40. Providing driver’s licenses to undocumented immigrants improves birth outcomes, research shows
  41. Technology is supposed to decrease teacher burnout – but we found it can sometimes make it worse
  42. Brain monitoring may be the future of work – how it’s used could improve employee performance or worsen discrimination
  43. Planning for spring’s garden? Bees like variety and don’t care about your neighbors’ yards
  44. Trudeau taps out: How Trump’s taunts and tariff threats added to domestic woes confronting Canada’s long-standing PM
  45. Americans’ rage at insurers goes beyond health coverage – the author of ‘Delay, Deny, Defend’ points to 3 reforms that could help
  46. How Christian nationalism played a role in incorporating the phrase ‘so help me God’ in the presidential oath of office
  47. That Arctic blast can feel brutally cold, but how much colder than ‘normal’ is it really?
  48. What Shakespeare revealed about the chaotic reign of Richard III – and why the play still resonates in the age of Donald Trump
  49. Nearly 54% of extreme conservatives say the federal government should use violence to stop illegal immigration
  50. Plants that evolved in Florida over millennia now face extinction and lack protection