AN INTRODUCTION TO THE THEORY OF STELLAR STRUCTURE AND EVOLUTION

With the purchase of this product, you will earn Oryx points for your next order

How does it work?

1. Earn points every time you shop

For every purchase you make on our website, you will earn Oryx points. On each product page, below the price, you will find the number of points that will be added to your account when you complete your order.

100 Oryx points = 1 euro

2. Accumulate points with every purchase

The points you earn from an order will appear as Pending assignment in your customer account, and a few days after receiving your package, they will become Available to use on your next purchase.

3. Redeem your points on an order

You can turn your accumulated Oryx points into discounts on your next order using the same registered user. During the checkout process, you will see the euro equivalent of your assigned points listed as available. For each order, you can choose to apply the discount or continue accumulating points for future purchases.