The Kármán line is an invisible boundary that is used by many to delimit where Earth’s space begins. Knowing where this is is essential in identifying where the sky ends and space begins.

The Kármán line: Separating space from sky

One of the most important aspects of time is its accurate measurement. What better way to understand this measurement than by learning about atomic clocks and how they work?

Keep up with time as accurately as possible with atomic clocks

Life can sometimes be found in the most unexpected of places. Antarctica has some of the harshest weather conditions on Earth. However, this also makes it a great location for discoveries.

Raymond Aguilar

The Kármán line: Separating space from sky

Keep up with time as accurately as possible with atomic clocks

Lake Vostok: What we know about Antarctica's mystifying subglacial lake