International Astronomical Union

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Tag: Bad Astronomy

New observations show the asteroid Hygiea is round!

Phil Plait

Oct 28, 2019

An actual image of the protoplanet Hygiea, taken using the SPHERE camera on the Very Large Telescope. Credit: ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS)

Tag: Bad Astronomy

Tag: Bad Astronomy

How do you know which pole of a planet is the *north* pole?

Phil Plait

Jul 18, 2019

Defining which rotation pole is north and which is south on a planet isn't as obvious as you think.

Tag: Bad Astronomy

Tag: Bad Astronomy

Contest: Pick names for Jupiter's new moons!

Phil Plait

Mar 21, 2019

Orbits of twelve new moons found for Jupiter (not to scale). Some orbit the same way Jupiter spins (blue), and others the opposite way (red). Credit: Carnegie Institution for Science / Roberto Molar Candanosa

Tag: Bad Astronomy

Tag: Bad Astronomy

Phil Plait

Sep 19, 2017

Pluto and Charon, to scale in size and brightness. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Tag: Bad Astronomy

This could end badly: Astronomers to use online voting to choose new planet names

Trent Moore

Jul 9, 2014

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