NaSa

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When Is the Geminid Meteor Shower?
Space science

When Is the Geminid Meteor Shower?

The Geminid meteor shower is one of the most reliable annual showers and is associated with 3200 Phaethon, an asteroid or 'rock comet' rather than a typical icy comet. N…

September 11, 2026
What Are Meteor Showers and What Causes Them?
Space science

What Are Meteor Showers and What Causes Them?

Meteor showers happen when Earth passes through streams of small particles left along the orbits of comets or, in some cases, asteroid-like bodies. The particles enter t…

September 11, 2026
How Do Climate Models Work?
Environment

How Do Climate Models Work?

Climate models are mathematical representations of the atmosphere, ocean, land, ice and the exchanges of energy and matter among them. They are built from physical laws…

September 11, 2026
What Is the Evidence for Climate Change?
Environment

What Is the Evidence for Climate Change?

Evidence for climate change comes from many independent measurements rather than one thermometer record. Surface stations, satellites, ocean instruments, ice observation…

September 11, 2026
NASA Artemis: Missions to the Moon Explained
Space science

NASA Artemis: Missions to the Moon Explained

Artemis is NASA’s campaign to build a sustained human exploration capability around and on the Moon, using Orion, the Space Launch System, commercial lunar landers, surf…

September 11, 2026
What Are Exoplanets?
Space science

What Are Exoplanets?

Exoplanets are planets beyond our solar system. They range from small rocky worlds to giant planets and can orbit stars very different from the Sun.

September 10, 2026