SKU: 36462924418

What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System

Sale price$17.59 Regular price$19.54
Save 10%

Pay in installments of $4.88 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System"What if?" questions have always stimulated people to think in new ways. What if the Earth Had Two Moons leads us on a fascinating 10 world journey exploring what the Earth would be like if conditions in the universe were slightly different. The answer: Earth would be different, often in ways that would surprise us. The title chapter, for example, gives us a second moon orbiting closer to Earth than the one we have now. The night sky is a lot

"What if?" questions have always stimulated people to think in new ways. What if the Earth Had Two Moons leads us on a fascinating 10 world journey exploring what the Earth would be like if conditions in the universe were slightly different. The answer: Earth would be different, often in ways that would surprise us. The title chapter, for example, gives us a second moon orbiting closer to Earth than the one we have now. The night sky is a lot brighter, but not forever. Eventually the moons collide, with one more-massive moon emerging after a period during which Earth has a Saturn-like ring. The scenarios also shed new light on the burgeoning search for life on planets orbiting other stars.
Appealing to adult and young adult alike, this book is a fascinating journey through physics and astronomy, and follows on the author's previous bestseller, What if the Moon Didn't Exist?, with completely new scenarios backed by the latest astronomical research.



Binding Type: Paperback
Publisher: St. Martin's Griffin
Published: 08/02/2011
ISBN: 9780312673352
Pages: 288
Weight: 0.80lbs
Size: 8.40h x 5.50w x 0.80d
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 36462924418

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 20 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
V
Verified Purchase
Vail-Marie Kendall
Houston, US
★★★★★ 4
Heavy duty chewing, not heavy duty dropping
Size: X-Large, Color: Textured Ring
My super chewer loved this toy, great shape, provided long lasting entertainment. However, when he dropped it from his mouth onto our epoxy flooring (not a far drop as he’s only 50lbs) one chunk broke clean off at the 2 smaller joints. Although we kept the larger piece for a while, a similar drop a week later broke it again. Considering this is fairly inexpensive, I wasn’t expecting it to be indestructible. It’s just strange how it broke. Will probably buy again to test one more time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
C
Verified Purchase
Charlene
Dallas, US
★★★★★ 5
My dog loves these things
Size: Large, Color: Femur Bone
My dog loves these things. They don't smell at all. It was a great price. It's big enough for my Frenchie. It's pretty durable but he is able to gnaw it rough so I do have to replace them periodically.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
J
Verified Purchase
Joe & Laura
West Palm Beach, US
★★★★★ 5
Doggo Approved
Size: X-Large, Color: Textured Ring, Size: X-Large, Color: Textured Ring
About as indestructible as it gets. It's just very hard molded material. I always make sure to wash the dog toys before letting them play, who knows where they come from. Picture is after hours/days of the built playing with it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
L
Verified Purchase
Lynn G
Battle Creek, US
★★★★★ 5
Old Faithful
Size: Large, Color: Wishbone, Size: Large, Color: Wishbone
AmStaf/Lab loves this product. I am still concerned about him ingesting the sharp little pieces he gnaws off, but he seems OK after three months of using these. Tried the Nylabone natural/wild products but they are not usable as a "chew" and disappear within minutes, nay seconds! -So here I am back to the "strong chew" wishbone product which makes my dog happy and keeps him busy not eating my shoes. (Be warned though, these are worse than Legos if accidentally stepped on!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
A
Verified Purchase
andy
Pawtucket, US
★★★★★ 5
Perfect for small dog that likes to chew
Size: Small, Color: Textured Ring
Just got this today (small size for my 15 lb dog) and she loves it. Perfect size for her small mouth and teeth. Keeps her busy and even tires her out and rests a while, Between this type of dog toys and ones that squeak she is having a great time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026

recommand products