Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
The Planetary Report
Halley's Comet Wrap-Up On the Cover: With images like this one, scientists were at last able to take a close look at the nucleus of Halley's Comet. Here sunlight is coming from the left, heating the icy body so that dust and gas jets erupt from its surface. Near the top are bright spots, and below them is a crater-like feature about 1.5 kilometers in diameter. This could be a slump feature formed by the outgassing of nearby jets. Below and right of the "crater" is a bright feature about 400 meters high that some scientists call "the mountain."
Image taken by the Halley Multicolor Camera. ©1986 Max Planck Institut für Aeronomie, Lindau/Harz, F. R. G., provided by H. J. Reitsema and W. A. Delamere, Ball Aerospace

Volume 7, number 2
March/April 1987

Halley's Comet Wrap-Up

Download this issue as a PDF
(Planetary Society members only)

Features

3 Studying Halley's Comet from Earth and from Space: Jürgen Rahe, head of the International Halley Watch Eastern Lead Center, introduces our special issue on Halley's Comet.

5 The Science of Comets: A Post-Encounter Assessment: D. Asoka Mendis summarizes what we've learned, and what questions remain.

8 The Wobbling Nucleus of Halley's Comet: Michael Belton looks at the complicated rotational state of the heart of the comet.

14 Halley's Comet Was Here! A Look at Halleymania: Louis Friedman describes how a comet captured worldwide attention.

16 The Next Step in Exploring Comets: Marcia Neugebauer asks: Where do we go from here?

Departments

19 News & Reviews Will NASA ever visit a comet?

20 World Watch The new NASA budget.

21 Society Notes Hawaii calls The Planetary Society.

Facebook Twitter Email RSS AddThis

Essential Advocacy

Our Advocacy Program provides each Society member a voice in the process.

Funding is critical. The more we have, the more effective we can be, translating into more missions, more science, and more exploration.

Donate

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join The Planetary Society

Let’s explore the cosmos together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!