As signature subhead reverse@2x
Stars and stellar evolution
Planetary Nebula NGC 2440

NGC 2440


A planetary nebula formed by a dying star. At the center of NGC 2440 lies one of the hottest known white dwarfs, with a surface temperature of nearly 400,000 degrees Fahrenheit (200,000 degrees Celsius)


This planetary nebula is found in the constellation Puppis, in the Southern Hemisphere

Distance from Earth

4,000 light-years


Over one light-year across

Planetary nebula NGC 2440 is the colorful last hurrah of a star like our Sun.

Enlarge Image


"Fast Facts: Planetary Nebula NGC 2440" is a table that lists the name, location, size, and distance of this planetary nebula from Earth. A picture of the nebula is included.

Printer-friendly web page
Adaptable, at teacher's discretion
How to use in the classroom

Use this resource as:

A source of information. Read the table to find out about this object.

A mapping activity. Locate the nebula's associated constellation on a star map.

A large-number recognition activity. Have students look at several Fast Fact tables, including this one. Ask them to place the objects described in the Fast Fact tables in order, starting with the object closest to Earth and ending with the one farthest away.

An inquiry tool. Have students write down questions they would like answered about the image and the information in the Fast Facts table.

An engagement tool. Involve students in a discussion.

Related materials

HubbleSite press release: "The Colorful Demise of a Sun-Like Star"