Amazon Prime Day 2021: The best space deals to watch

Celestron AstroMaster 130EQ Telescope
$279.95 $195.99 at Amazon (30% off)
This Celestron reflector is a powerful telescope for stargazing beginners and features a 130mm objective lens, 2 eyepieces (20 mm and 10 mm), a travel tripod and red dot finderscope. It also includes a free download of Starry Night astronomy software. A 2-year warranty rounds out the deal for added buyer security.

Celestron Ultima 80 Angled Spotting Scope
$239.95 $160.49 at Amazon (33% off)

This compact spotting scope is a nice upgrade from binocular viewing for beginners. The 80 mm telescope allows beginners to pan around the sky hunting down bright solar system or deep sky objects. It includes a tripod mounting plate (the tripod is sold separately) and a zoom eyepiece, but use the zoom with caution as you may get blurry viewing.

Celestron PowerSeeker 127EQ Telescope
$189 $132.49 at Amazon (30% off)

This is a great deal for intermediate skywatchers for dabbling in observing deep sky objects and worlds in the solar system. The Celestron PowerSeeker 127 EQ comes with two eyepieces: a 20 mm and 4mm, which work with the optical system to produce magnifications of 50x and 250x. Skywatchers will need to be comfortable with using an equatorial mount and the slow-motion controls, along with performing a a polar alignment.

Celestron AstroMaster 70AZ Telescope
$149.95 $116.49 at Amazon (22% off)

This telescope will help beginners scroll around the sky. The 70 mm refractor comes with two eyepieces, a red dot finder scope, and a tripod with adjustable height. You can move between objects using a panning handle with altitude-azimuth control. The telescope comes with a bonus version of Starry Night Basic Edition to help you with wayfinding.

Celestron Nature DX 8x42 binocular
$146.95 $102.99 at Amazon (30% off)

Great for terrestrial and astronomical observations, Celestron's Nature DX 8x42 binocular is lightweight and waterproof. It comes with a carrying case, objective lens caps, an eyepiece rain guard, a neck strap, a lens cloth and an instruction manual.

Celestron Outland X 10x24 Binocular
$87.95 $55.99 at Amazon (36% off)

These compact binoculars offer good 10x magnification for casual skywatching but also deliver outstanding performance for birdwatching. With a tough, grippy exterior and waterproof design, they are made to withstand the great outdoors on even the most arduous hikes. They come with the added benefit of being filled and sealed with nitrogen gas, making them immune to fogging. Normally priced at up to $87.95, these are a great addition to your skywatching arsenal.
  

Celestron NexYZ 3-Axis Universal Smartphone Adapter
$65.95 $43.99 at Amazon (33% off)

Pair any smartphone with your Celestron telescope for 33% less this Prime Day. The smartphone adapter works with a big range of models, such as the latest editions from Samsung, Google and Apple. 

Lego City Space Mars Research Shuttle Building Kit
$39.99 $31.99 at Amazon (20% off)

If you always wanted to fly on Mars, this set will let you soar to new heights. This combination rover, space shuttle and drone set allows young builders to explore the Red Planet by land and by air. 

Lego Star Wars: The Rise of Skywalker Resistance A-Wing Starfighter | $29.99 $18.99 at Amazon

Get ready to join the Resistance with this iconic "Star Wars" A-Wing fighter. In a package of 269 pieces, you'll get two firing missiles, a retractable landing gear and several action figures. It's rated for ages seven and up. 

Lego NASA Space Shuttle Discovery
$367.88 $345 at Amazon (6% off)

Build your own Hubble Space Telescope launch with Lego's 2,354-piece NASA Space Shuttle Discovery set. Read Space.com's review.

SOLD OUT — Lego City Space Deep Space Rocket and Launch Control Building Kit | $99.99 $80 at Amazon (20% off)

Get ready to launch to Mars! This rocket has all the parts needed for an amazing mission to the Red Planet. You can set the rocket atop a launchpad, which is easily connectable to a separate launch control center using a monorail. The launch control facility includes a detachable window section, and the ability to fold it out or set a countdown. This 837-piece set comes with many accessories, including a robot, a space telescope, astronaut minifigures, ground personnel, and a tile with a secret symbol.

Echo Dot (3rd Gen) Plum with Mandalorian The Child Stand
$64.94 $41.94 at Amazon (35% off) 

Asking Alexa for help or playing music was never so adorable as it is with tis Mandalorian-themed Echo Dot bundle for Prime Day. 

Funko Super Sized POP! 'Star Wars: The Rise of Skywalker' D-O vinyl figure | $49.99 $23.95 at Amazon (52% off)

D-O, the excitable and quirky little droid who Rey fixed up in The Rise of Skywalker, is on sale for 52% off its original price of $49.99, selling during Prime Day at $25. The vinyl figure stands 10 inches (25 centimeters) tall.

3D Baby Yoda Toys Night Light:$18.99 $15.19 at Amazon
Grogu (aka Baby Yoda) from "The Mandalorian" on Disney Plus lit up our lives. Now it can light up your room with this adorable 3D night light. Interchangeable Darth Vader and Chewbacca light figures are included. The lamp has a 90-day money back guarantee.

DEAL ENDED — Lego Star Wars: The Razor Crest
$129.99 $77.99 at Amazon (40% off)
This best-selling set features the famous Razor Crest ship of "Star Wars: The Mandalorian." Included are four minifigures: The Mandalorian, Baby Yoda, Greef Karga and Scout Trooper.

Star Trek: The Original Motion Picture Collection| $33.99 $15.99 at Amazon (53% off)

Collect all six of "Star Trek: The Original Series" Hollywood films in one Blu-Ray package. The set includes the acclaimed "Genesis trilogy" of films that detail the adventures of Spock, Kirk's son and the infamous Genesis planet generator.

Star Trek: The Next Generation - The Complete Series Blu-ray| $208.99 $117.99 at Amazon (44% off)

Join the voyages of Jean-Luc Picard, Number One, Data, Troi and more with the complete collection of "Star Trek: The Next Generation" episodes on Blu-Ray. Boldly go into the world of the Borg and of intergenerational conflict in this classic series.

Star Trek U.S.S. Enterprise 1701-D Bluetooth Speaker| $99.95 $59.99 at Amazon (40% off)

Fly the Federation quadrants using 1701-D version ("Star Trek: The Next Generation") of the U.S.S. Enterprise, on sale at a 40% discount. Just make sure to watch out for the Borg.

Star Trek: The Original Series Tribbles Heat Mug| $16.95 $10.17 at Amazon (40% off)

This heat-sensitive mug reveals a secret tribble-tastic image when a hot liquid is added. 

Star Trek (2009) Blu-Ray| $15.99 $6.96 at Amazon (56% off)

For 56% on Amazon.com, "Star Trek" (2009) lets you beam up with the Chris Pine-led "Star Trek" in their first of the rebooted Hollywood trilogy, loosely based on The Original Series. Watch for some Federation-friendly cameos!

What We Left Behind: Looking Back At Star Trek: Deep Space Nine (Blu-ray)| $22.99 $13.79 at Amazon (40% off)

This 2019 film provides a nostalgic look back at "Deep Space Nine", and it's available for 40% off at Amazon. This "Star Trek" series (which ran from 1993 to 1999) used epic story arcs and dealt with serious matters such as war, post-traumatic stress disorder and racism, putting the series far ahead of its time.

Star Trek: Discovery Season 2 Blu-ray| $50.99 $34.95 at Amazon (31% off)

Join the time-bending adventures of the "Star Trek: Discovery" crew in the latest complete season available in Blu-Ray, now discounted by a warp-driving 31%. This action-packed season portrays the crew of U.S.S. Discovery finding their way in an alternate timeline.

Returnal for PlayStation 5 | $69.99 $49.99 at Amazon (29% off)

From video game developer Housemarque, Returnal is a sci-fi adventure where you must take control after crash-landing on a strange, shape-shifting world. This is an exclusive for PlayStation 5 and it's 29% off in time for Amazon Prime Day.

Hasbro Gaming's "Operation": "Star Wars The Mandalorian" Edition | $19.99 $10.71 at Amazon (save $7)

This special Baby Yoda-themed edition of "Operation" is 46% off for Prime Day. Players need to race to remove objects from openings in the game, while The Child tries to seize frogs, eggs, broth or other items by himself.

Hasbro Gaming's "Trouble": "Star Wars The Mandalorian" Edition | $14.99 $7.49 at Amazon (save $7)

This Baby Yoda-themed edition of "Trouble" has up to four players racing to rescue The Child on a strange planet. It's nearly 50% off for Prime Day and allows you to play as characters such as IG-11, Kuiil or The Mandalorian himself.

Terraforming Mars | $69.95 $56.99 at Amazon (19% off)
It's smart, challenging and beautifully crafted and now you can get the Terraforming Mars base game with a 17% discount, saving you just under $12 on the usual price.

Terraforming Mars: Turmoil | $34.95 $26.01 at Amazon (26% off)
All is not well on Mars. This expansion lets you struggle for control of the transforming Council and influencing the politics that have developed. Turmoil includes new corporations, projects, and new global events cards that can throw anything from dust storms to uprisings at the players.

Deal ended — Catan: Starfarers | $99.99 $74.25 at Amazon
Save 19% on "Catan: Starfarers" in this incredible Prime Day deal. The game, a space-based variation of the classic board game "Catan", allows at least three to four players to explore and settle the galaxy in a futuristic setting, in the middle of the third millennium.

littleBits Space Rover Inventor Kit | $49.97 $29.99 at Amazon (40% off)
Build, customize and drive an app-controlled rover for planetary science adventures. You'll also get some NASA-inspired astronaut training and missions to perform.

littleBits Avengers Hero Inventor Kit | $69.95 $53.99 at Amazon (23%)
Inspired by the popular "Avengers" comic books and movies from Marvel, your kids can learn how to code for 23% off this Prime Day. The kit includes authentic sound effects, a superhero voice, an animator creator and compatibility with iPhone (iOS 10.0 or later) or Android (5.0 or later.) 

National Geographic's Stunning Chemistry Set | $34.99 $24.49 at Amazon (30% off)

Explore science with this kit that includes more than 15 experiments for the STEM-obsessed in your family.

Ciro 12-in-1 solar-powered robot kit | $26.99 $21.59 at Amazon (25% off)

Build up to 12 different types of solar-powered robots with this kit!

Ciro 4-in-1 space robot kit | $22.99 $18.39 at Amazon (20% off)
Build a walking robot, space shuttle, moon buggy or space station with this kit! 

Deal ended — Airivo Northern Lights Star Projector | $42.99 $31.38 at Amazon (save $11)
This 3-in-1 night light is nearly 30% off for Amazon Prime Day. It shows off a combination of auroras and stars and includes a white noise feature to help you relax or sleep.

The Original Stomp Rocket Jr. | $24.95 $17.60 at Amazon (29% off)
Have tons of rocket fun with the Original Stomp Rocket Jr. Glow Rocket and Rocket Refill pack that includes a launcher and 7 rockets. 

Estes Mav Flying Model Rocket Kit 7283 | $19.99 $12.99 at Amazon (35% off)
Aspiring rocket engineers can boost this rocket to as high as 250 feet (76 meters). You'll need to buy the engines and launch system separately, but assembly only takes about 15 minutes.

Estes Nike-X | $21.99 $14.99 at Amazon (32% off)
Recreate this historic ballistic rocket through a mini-launch experience. In just four to six hours, you can assemble the Nike-X for a launch that will bring your rocket up to 900 feet (275 meters). Make sure to gather your engines and launch materials, sold separately.

Estes Space Corps Centurion Launch Set | $49.99 $28.99 at Amazon (42% off)
This beginner's model rocket will easily help you soar up to 700 feet (213 meters). Once you use the recommended launch system and engines (sold separately), it should just take you a few minutes to put this rocket together and to safely launch it.

E.T. in 4k Ultra HD | $22.98 $9.99 at Amazon (57% off)
One of the most famous science fiction movies of all time, this Steven Spielberg film tells the unforgettable story of a lost alien and the 10-year-old boy who helps him find his way home. 

"Beyond: The Astonishing Story of the First Human to Leave Our Planet and Journey into Space"
$29.99 $20.50 at Amazon (32% off)
Author and documentary filmmaker Stephen Walker recounts intimate details of the months, and years, leading up to Gagarin's historic flight, revealing the true stories of the Soviet space program as the agency prepared to launch the first human into space. Read Space.com's Q&A with the author here.

Cowboy Bebop: The Complete Series on Blu-ray | $59.98 $19.99 at Amazon (67% off)

The acclaimed anime series "Cowboy Bebop" is on sale for 67% off this Prime Day! Follow along with a team of intergalactic bounty hunters as they travel the galaxy trying to make a buck.

"Dr. Wonderful and Her Dog Blast Off to the Moon!"
$17.99 $13.95 at Amazon (22% off)

This kids book, written by Lauren Gunderson and illustrated by Valerio Fabbretti (Two Lions, 2017), follows the journey of the ever-curious Dr. Wonderful, as she and her canine companion head for the lunar surface.

The hardcover version is currently $13.95, down from a list price of $17.99 (or free with Kindle Unlimited). The Kindle version is free with a Kindle Unlimited subscription.