Janna Levin

Janna Levin

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Astrophysicist and author; black holes, cosmology, space education.

Rocky’s Eyeless Design Highlights Plausible Alien Echolocation
SocialApr 11, 2026

Rocky’s Eyeless Design Highlights Plausible Alien Echolocation

I appreciated that Rocky the extraterrestrial didn't have eyes. He seemed to use some kind of echolocation. 'How realistic is "Project Hail Mary"' https://t.co/ZdHM0AXmZi via @CBSNews

By Janna Levin
Artemis Crew Faces 40‑minute Lunar Blackout, Relies on Camaraderie
SocialApr 6, 2026

Artemis Crew Faces 40‑minute Lunar Blackout, Relies on Camaraderie

Artemis astronauts about to lose contact with the Earth for about 40 minutes as they pass behind the Moon. At least they have each other. https://t.co/jAC1YLps9f

By Janna Levin
Astronauts Enter Moon
SocialApr 5, 2026

Astronauts Enter Moon

The astronauts wake up to “Work” by CeeLo Green and Apollo 16 astronaut Charlie Duke sends a message: “Below you on the moon is a photograph of my family…Godspeed and safe travels home.” Today they will enter the Moon’s gravitational...

By Janna Levin
From Kubrick’s Dream to Artemis: Moon Journey Continues
SocialApr 3, 2026

From Kubrick’s Dream to Artemis: Moon Journey Continues

April 2, 1968, Kubrick releases 2001: A Space Odyssey. December 21, 1968, Apollo 8 orbits the Moon. July 20, 1969, Apollo 11 lands on the Moon. April 1, 2026, Artemis heads back to the Moon. https://t.co/OYK341YTa2

By Janna Levin
Artemis Crew to Witness Lunar Total Solar Eclipse
SocialApr 2, 2026

Artemis Crew to Witness Lunar Total Solar Eclipse

While on the far side of the Moon, the orbit of the Orion capsule will just happen to align with the Sun and the Moon, treating the Artemis astronauts to a total eclipse. The Sun's corona will be visible. Should...

By Janna Levin
NASA Mission Audio: Unexpectedly Soothing Bedtime Companion
SocialApr 2, 2026

NASA Mission Audio: Unexpectedly Soothing Bedtime Companion

Plan to fall asleep to NASA tv, watching the Orion capsule Integrity, listening to the slow volley of commands and checks. Very soothing. https://t.co/JQcKKzswl0

By Janna Levin
Excitement for Moon Mission, but Space Weather Threatens
SocialApr 2, 2026

Excitement for Moon Mission, but Space Weather Threatens

Thrilling to watch our compatriots leave this Earth on the way to the Moon. Beware space weather our spacefaring friends.

By Janna Levin
Moon Mission Could Help Humanity Rediscover Earth
SocialApr 1, 2026

Moon Mission Could Help Humanity Rediscover Earth

Science is transcendent -- true to nature in another galaxy on other side of the observable Universe. Humanity could use some of that transcendence here on Earth...by leaving Earth to go to the Moon. "58 Years After ‘Earthrise,’ NASA’s New...

By Janna Levin
Artemis Astronauts Brave Unproven Systems on Moon Mission
SocialApr 1, 2026

Artemis Astronauts Brave Unproven Systems on Moon Mission

Imagine the sheer courage of today's Artemis astronauts: testing aspects of the Orion capsule, a new and more distant orbit around the moon, a heat shield that previously disappointed, and...worst of all...an as yet untested. . . um. . ....

By Janna Levin
Only One Nation Has Landed Humans on the Moon
SocialApr 1, 2026

Only One Nation Has Landed Humans on the Moon

Not to throw my adorable and clever students under the bus, but I asked a group of over 30 college students how many countries have put a human on the Moon. Not one student knew for sure, but most suspected...

By Janna Levin
Explore Black Hole Mysteries at MIT Museum Tonight
SocialMar 31, 2026

Explore Black Hole Mysteries at MIT Museum Tonight

Hi All I'll be at the MIT Museum tonight if you are near Kendall Square. This from MIT: Curious about black holes? Join physicist and historian Peter Galison and astrophysicist Janna Levin at or a captivating conversation exploring the mysteries, science, and philosophical...

By Janna Levin
Klein Bottle Experiment Reveals Unexpected Particle Chirality Dynamics
SocialMar 24, 2026

Klein Bottle Experiment Reveals Unexpected Particle Chirality Dynamics

Originally, we wanted to shoot left-handed particles into a Klein bottle and watch them return right-handed. Like a topological ray-gun. What we found was rather more subtle and interesting.

By Janna Levin
Our Clocks Are Cosmic Cycles: From Day to Galaxy
SocialMar 21, 2026

Our Clocks Are Cosmic Cycles: From Day to Galaxy

Humanity is keeping time by keeping track of these celestial cycles. Like the dial of an analog clock, the cycles swing around and around: the daily cycle of the Earth’s spin, the monthly cycle of the Moon, the yearly cycle...

By Janna Levin
Earth’s 26,000‑year Wobble Swaps North Stars
SocialMar 21, 2026

Earth’s 26,000‑year Wobble Swaps North Stars

The Vernal Equinox (equi-night) reminds me of other celestial cycles. The Earth’s spin axis takes about 26,000 years to wobble around like a spinning top, a motion known as the precession of the equinoxes. Right now, Polaris is the north...

By Janna Levin