Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...

Test your knowledge of humanity's major space-faring milestones and the incredible astronauts who accomplished them. When you purchase through links on our site, we may earn an affiliate commission.

When you buy through links on our articles, Future and its syndication partners may earn a commission. These trailblazers opened the doors for others to explore the far reaches of space. . | Credit: ...

From the earliest artificial satellites to today's sophisticated space telescopes and GPS constellations, these marvels of engineering have revolutionized how we communicate, navigate, observe, and ...