Tag Archives: astronomy

ʻOumuamua: Data, Questions

ʻOumuamua, the first interstellar object observed passing through the Solar System, is in the news again. Scientists have been studying what little we know about the object. Quite a few have published their results. Two Harvard scientists looked at the … Continue reading

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An Exomoon, Science and Truth

Kepler-1625b, a gas giant more massive than Jupiter, may have a moon. A big one: nearly Neptune’s size. Scientists still aren’t sure that the exomoon exists. If it does, they have another puzzle: figuring out how it formed. I started … Continue reading

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Found: a ‘Baby Planet’

Pictures of PDS 70b show a planet that’s still forming. It’s the youngest planet scientists have imaged so far. They figure studying it will help them learn more about how planetary systems develop. I think they’re right. Attitudes and assumptions … Continue reading

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Oxygen, Alien Life

We haven’t found extraterrestrial life. But we’re still finding planets circling other stars. Thousands of them. Some of those planets couldn’t possibly support life as we know it. But some might. Atomic oxygen may be a good biosignature: evidence of … Continue reading

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