Pluto does have an atmosphere, though it's very thin and faint compared to Earth's. It's mostly made up of nitrogen (N2), with smaller amounts of methane (CH4) and carbon monoxide (CO).

Here's a breakdown:

* Nitrogen (N2): The primary component, making up about 90% of the atmosphere.

* Methane (CH4): This gas is responsible for Pluto's bluish hue.

* Carbon Monoxide (CO): Present in much smaller amounts than nitrogen and methane.

It's important to note that Pluto's atmosphere is very dynamic. Its pressure varies depending on Pluto's distance from the sun. When Pluto is closer to the sun, some of its ice turns to gas, causing the atmosphere to expand. As Pluto moves farther away, the atmosphere freezes and collapses back onto the surface.