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Author: Alison Klesman

Alison earned her bachelor’s degree in physics and master’s degree in earth, atmospheric, and planetary science from MIT. During this time, she completed several years of research in the field of planetary science, working on research topics that ranged from comets and asteroids to the atmosphere of Pluto. She earned her Ph.D. in astronomy from the University of Florida for work surveying active galactic nuclei in massive galaxy clusters, after which she focused on outreach at Spencer's Observatory in Tucson, Arizona. Asteroid 30286 Klesman (2000 HG61) is named after her. Alison has been with the magazine since 2016.
A golden Full Moon in a dark blue sky seen through the branches of a foreground tree.
Observing, The Moon

2026 Full Moon calendar: When to see the Full Moon and phases

The sky on April 20, 2026, 30 minutes before sunrise, looking east
Observing

The Sky Today on Monday, April 20: A trio of predawn planets

Observing

The Sky Today on Sunday, April 19: The Moon passes above the Pleiades

Observing

The Sky Today on Saturday, April 18: Venus moves into Taurus

Observing

The Sky Today on Friday, April 17: Perfect setup for the zodiacal light

Sky This Week, The Sky This Week

The Sky This Week from April 17 to 24: The Lyrid meteor shower peaks

Observing

The Sky Today on Thursday, April 16: Ganymede transits Jupiter

Observing

The Sky Today on Wednesday, April 15: Spot the Moon and Mercury this morning

Observing

The Sky Today on Tuesday, April 14: An Io transit

Observing

The Sky Today on Monday, April 13: Io and Europa cross paths

Observing

The Sky Today on Sunday, April 12: Comet C/2025 R3 (PanSTARRS) grows bright

Path of Comet Tempel 2 in April 2026
Observing

The Sky Today on Saturday, April 11: Comet Tempel 2 in Scutum

Posts pagination

1 2 3 … 90 Older posts
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