Into the Impossible With Brian Keating

Avi Loeb: `Oumuamua is EXTRATERRESTRIAL (#307)

Mar 28, 2023

01:05:03

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Episode notes

Introduction

3min

Avi Lohm Defends His Proposition Against a Paper Attacking His Proposition at a Mua Mua

3min

The Importance of Integrity as a Scientist

2min

The Social Phenomenon of Wishful Thinking

4min

The Importance of Logic in the Scientific Method

3min

The Stern-Gurlock Experiment

5min

The Different Types of Comets

2min

The Differentiation of Oumuemua From the Solar System

5min

The Origins of Icebergs

4min

10.

The Object 2020 S.O.

3min

11.

The Origins of a Mother's Ship

3min

12.

The Probability of an Extraterrestrial Equipment in the Ocean

2min

13.

The Interstellar Meteor

1min

14.

The First Interstellar Object

5min

15.

The New Superconductor

4min

16.

The Importance of Surprising Science News

4min

17.

Omu Amua or This Meteorite?

3min

18.

The Role of the Web Telescope in Searching for Objects

2min

19.

The Acceleration of Comets

2min

20.

The Best Critique of the Mummua as Extraterrestrial Technology

3min

21.

The Impossible Podcast

2min

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Recently, Bergner and Seligman explained the behavior of the first interstellar object, ‘Oumuamua, as a rare form of a quite common object, a comet. They claim it "began as an icy planetesimal that was irradiated at low temperatures by cosmic rays during its interstellar journey, and experienced warming during its passage through the Solar System. This explanation is supported by a large body of experimental work."

But Avi Loeb disagrees: “In a new paper published recently in Nature -- https://www.nature.com/articles/s41586-022-05687-w Acceleration of 1I/‘Oumuamua from radiolytically produced H2 in H2O ice -- Jennifer Bergner and Darryl Seligman suggest that the peculiar acceleration observed by the first known interstellar object `Oumuamua, can be explained if `Oumuamua was made of water ice which was partly dissociated into hydrogen by cosmic-rays along its interstellar journey. In the abstract of the paper, the authors admit that past models involving a pure hydrogen iceberg or a pure nitrogen iceberg do not work due to theoretical or observational inconsistencies. In fact, the hydrogen iceberg model was proposed in a previous 2020 paper by Darryl Seligman himself. A few months later, Avi wrote a paper with Thiem Hoang, showing that heating by interstellar starlight would destroy hydrogen icebergs too quickly and not allow them to reach the solar system from their likely formation sites of giant molecular clouds.

https://www.nature.com/articles/s41586-022-05687-w

Read Hoang and Loeb's response paper:

https://lweb.cfa.harvard.edu/~loeb/Hoang_Loeb_23.pdf

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