We are experiencing issues that prevent checkout in Internet Explorer 8.

You can browse and even save your cart, but you'll need to use another browser or a different device to place your order. Sorry for the inconvenience.

FREE SHIPPING ON ORDERS $75+

US ECONOMY ONLY • NO CODE • DOESN'T COMBINE WITH OTHER OFFERS

Aurora Borealis Heat Change Mug

Fill with caffeine and get ready for the show

  • Fill with caffeine and get ready for the show
  • When filled with hot liquid, the mug shows the aurora borealis in the sky
  • A ThinkGeek exclusive
Read more...

$9.99

Out of stock

Late June 2016

Get 1 for $1 with orders $50+ OR get up to 20 for $1 each with orders $200+!
Here's how the deal works:
1. Click "Buy Now."
2. Add $50 of merchandise to your cart. Or add $200 of merchandise to your cart and choose up to a total of 20 $1 Gifts for $1 each.
3. At Checkout, enter the code CHOOSE and the $1 eligible items will be discounted to $1.

Limited to 1 $1 Gift with $50+ spent or a maximum of 20 $1 Gifts with $200+ spent. Select products only. For a limited time. Online only.

Email Me

or

Fill with caffeine and get ready for the show

Caffeine. It makes us light up. It excites us. The thought of that first cup of coffee can really get us moving in the morning, literally and figuratively.

Much as caffeine particles pass into our bloodstream and make us bounce off walls, so, too, the particles from solar winds pass through the Earth's magnetosphere near the poles and share energy, causing a spectacular display in the upper atmosphere. When these particles collide with oxygen in particular at lower altitudes (up to 150 miles), the photon released appears green or yellow, giving a similar light show as to the one captured on this mug when you fill it with warm liquid.
Product Specifications 
  • Aurora Borealis Heat Change Mug
  • A ThinkGeek exclusive
  • When filled with hot liquid, the mug shows the aurora borealis in the sky
  • Capacity: 12 oz.
  • Materials: Ceramic
  • Not microwave safe
  • Not dishwasher safe

Timmy and the TG Staff think you'll like...

Customer Action Shots

Send us your action shots!

Your Fellow Smart Masses Also Bought