#1
S8E11
Mysteries of Alien Stars
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The peaks and the valleys. Find the essential episodes — and the ones to skip.
#2
S8E14
Forces of the Unknown
This off-season episode was made up of three other regular season episodes of How the Universe Works: S8.7 Edge of the Universe, S7.3 The Interstellar Mysteries, and S4.4 Edge of the Solar System.
#3
S9E1
Journey to a Black Hole
Journey to the heart of the M87 supermassive black hole, the first and only black hole ever photographed, and explore the mystery of how it grew so large, what lies inside, and how it controls the entire galaxy.
#4
Pluto's Strangest Secrets
S8E10
#5
Asteroid Apocalypse
S8E12
#6
Are black holes real
S6E1
#7
Edge of the Universe
S8E7
#8
Voyager's Ultimate Mission
S10E6
#9
Mystery of Spacetime
S6E10
#10
Nightmares of Neutron Stars
S7E1
Lowlights
In a fictional scenario set in 2029, an asteroid hurtling towards Earth at 40,000 mph will reduce New York to ashes; examining the hypothetical, experts weigh in to determine what could happen, and how it might be stopped.
#97
Megaflares - Cosmic Firestorms
S2E4
#96
Volcanoes
S2E1
#95
Aliens Of The Microcosmos
S9E4
#94
The Most Violent Event in the Universe
S11E3
The Quality Arc
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
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Episode Engagement
High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.
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Series Trajectory
One point per season. Smooths out the episode-to-episode noise to reveal the bigger arc.
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Season Momentum
Did each season build or fizzle? Green means the finale outscored the premiere. Red means the opposite. Longer arrows, bigger swings.
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Season Consistency
How steady is each season? Tightly clustered dots mean reliable quality. Scattered dots mean a wild ride.
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