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Astronomy

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Astronomy: explore STEM content (page 5 of 26) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Astronomy Astronomy groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Astronomy

Stars, orbits, cosmology and observation on openstem — flashcards, notes, quizzes and plots shared by the community. Study free, or clone anything into your library.

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Flashcards7 cards

Where is the asteroid belt located?1 / 7

Between the orbits of Mars and Jupiter.

Astronomy

Astronomy · L2 · The Asteroid Belt and Kuiper Belt

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Astronomy · L2 · The Asteroid Belt and Kuiper Belt

Collection3 items

01Astronomy · L4 · Binary Star Systems & the Mass-Period Relation

02Astronomy · L4 · Binary star systems: the mass-period relation and observational classes

03Astronomy · L4 · Binary Star Systems — 4 Q

Astronomy

Astronomy · L4 · Binary Star Systems

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Astronomy · L4 · Binary Star Systems

Flowchart9 objects

Astronomy

Astronomy · L3 · Newtonian Gravitation · flowchart

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Astronomy · L3 · Newtonian Gravitation · flowchart

Flowchart15 objects

Astronomy

Astronomy · L4 · Stellar populations: the initial mass function and cluster dynamical evolution · flowchart

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Astronomy · L4 · Stellar populations: the initial mass function and cluster dynamical evolution · flowchart

Flowchart15 objects

Astronomy

Astronomy · L3 · From Solar Wind to Auroral Light

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Astronomy · L3 · From Solar Wind to Auroral Light

Flashcards8 cards

What is gravity?1 / 8

A pulling force that pulls every object toward every other object.

Astronomy

Astronomy · L1 · Gravity

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Astronomy · L1 · Gravity

Note~174 words · 1 min

Dust Trails Left Behind by Comets As a comet travels near the Sun, it sheds a trail of tiny dust and rock particles along its path. That trail stays behind in space, long after the comet has moved on. When Earth's orbit happens to cross thr

Astronomy

Astronomy · L1 · Meteor Showers

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Astronomy · L1 · Meteor Showers

Flowchart9 objects

Astronomy

Astronomy · L2 · The Sun's Structure and Activity · flowchart

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Astronomy · L2 · The Sun's Structure and Activity · flowchart

Flowchart17 objects

Astronomy

Astronomy · L5 · Binary Inspiral: From Wide Orbit to Chirp Detection

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Astronomy · L5 · Binary Inspiral: From Wide Orbit to Chirp Detection

Flowchart16 objects

Astronomy

Astronomy · L1 · The Moon Phase Cycle

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Astronomy · L1 · The Moon Phase Cycle

Flowchart14 objects

Astronomy

Astronomy · L2 · Venus's Runaway Greenhouse Effect

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Astronomy · L2 · Venus's Runaway Greenhouse Effect

Note~353 words · 2 min

Three Planets, Three Very Different Outcomes Venus, Earth, and Mars all formed in the inner solar system from similar raw materials, at roughly similar times. If you only looked at their ingredients, you might expect three fairly similar wo

Astronomy

Astronomy · L2 · Comparative Planetology

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Astronomy · L2 · Comparative Planetology

Flowchart17 objects

Astronomy

Astronomy · L3 · Star Formation & Molecular Clouds · flowchart

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Astronomy · L3 · Star Formation & Molecular Clouds · flowchart

Flowchart13 objects

Astronomy

Astronomy · L3 · Right Ascension or Declination?

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Astronomy · L3 · Right Ascension or Declination?

Flashcards8 cards

What is transmission spectroscopy, and when does it apply to exoplanets?1 / 8

Transmission spectroscopy analyses starlight that passes THROUGH a transiting exoplanet's atmosphere on its way to the observer. It applies only during a transit (when the planet crosses in front of its star as seen from Earth). Atmospheric gases absorb specific wavelengths, so the transit depth varies with wavelength — deeper at wavelengths absorbed by atmospheric constituents.

Astronomy

Astronomy · L4 · Exoplanet Atmospheres & the Habitable Zone

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Astronomy · L4 · Exoplanet Atmospheres & the Habitable Zone

Flashcards7 cards

What is a pulsar timing array (PTA)?1 / 7

A network of millisecond pulsars monitored for years to decades, used collectively as a galaxy-sized gravitational-wave detector. A passing low-frequency gravitational wave perturbs spacetime between Earth and each pulsar, producing tiny, correlated deviations in the precisely predicted arrival times of their radio pulses. PTAs (NANOGrav, EPTA, PPTA, CPTA, combined internationally as the IPTA) probe wavelengths of light-years, far beyond the reach of any ground- or space-based interferometer.

Astronomy

Astronomy · L5 · Pulsar Timing Arrays

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Astronomy · L5 · Pulsar Timing Arrays

Quiz4 questions

Which condition does Pluto fail to meet for full planet status?

AIt doesn't orbit the SunBIt isn't roundCIt hasn't cleared other objects out of its orbital neighbourhoodDIt has no moons

Astronomy

Astronomy · L2 · Dwarf Planets and the Kuiper Belt

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Astronomy · L2 · Dwarf Planets and the Kuiper Belt

Flowchart21 objects

Astronomy

Astronomy · L5 · Evidence for Dark Matter and Candidate Particles

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Astronomy · L5 · Evidence for Dark Matter and Candidate Particles

Flashcards8 cards

What supports a neutron star against gravitational collapse?1 / 8

Neutron degeneracy pressure — a purely quantum-mechanical effect from the Pauli exclusion principle: no two identical fermions (neutrons) can occupy the same quantum state. Packed to nuclear densities (~10¹⁷ kg/m³), neutrons are forced into high-momentum states, generating an outward pressure independent of temperature. This is the same mechanism (electron degeneracy) that supports white dwarfs, but neutron degeneracy can support a far more compact, massive object.

Astronomy

Astronomy · L5 · Neutron Star Physics

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Astronomy · L5 · Neutron Star Physics

Note~283 words · 1 min

A Place Where Gravity Wins A black hole is a region of space with such powerful gravity that nothing can escape it — not a spaceship, not a planet, and not even light itself. Because light can't get out, a black hole looks completely black,

Astronomy

Astronomy · L1 · Black Holes

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Astronomy · L1 · Black Holes

Note~304 words · 2 min

A Star's Life Is Written by Its Mass Every star begins the same way — a collapsing cloud of gas and dust — but from there, its mass decides almost everything else: how long it lives, how it dies, and what it leaves behind. Birth: From Cloud

Astronomy

Astronomy · L3 · Stellar Evolution

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Astronomy · L3 · Stellar Evolution

Collection4 items

01Astronomy · L3 · Asteroid Impacts & Craters

02Astronomy · L3 · Asteroid Impacts & Craters

03Astronomy · L3 · Assessing an Asteroid Impact Hazard

+1 more

Astronomy

Astronomy · L3 · Asteroid Impacts & Craters

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Astronomy · L3 · Asteroid Impacts & Craters

Flowchart15 objects

Astronomy

Astronomy · L5 · Primordial Black Holes: Formation and Dark-Matter Constraints · flowchart

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Astronomy · L5 · Primordial Black Holes: Formation and Dark-Matter Constraints · flowchart

Quiz2 questions

What is the correct order of the first four planets from the Sun?

AEarth, Mars, Mercury, VenusBMercury, Venus, Earth, MarsCVenus, Mercury, Mars, EarthDMars, Earth, Venus, Mercury

Astronomy

Astronomy · L2 · The Solar System

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Astronomy · L2 · The Solar System

Flashcards8 cards

What are the two parts of a shadow cast in space?1 / 8

The umbra, the fully dark inner shadow, and the penumbra, the partially lit outer shadow.

Astronomy

Astronomy · L2 · Eclipse Mechanics: Umbra, Penumbra, and Types

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Astronomy · L2 · Eclipse Mechanics: Umbra, Penumbra, and Types

Quiz5 questions

In the lens equation β = θ − (D_ls/D_s)α̂(θ), the term β represents:

AThe observed image position on the skyBThe source's true angular position, had it not been lensedCThe Einstein radius of the lensDThe redshift of the lens

Astronomy

Astronomy · L4 · Gravitational Lensing & Time-Delay Cosmography — 5 Q

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Astronomy · L4 · Gravitational Lensing & Time-Delay Cosmography — 5 Q

Flowchart13 objects

Astronomy

Astronomy · L3 · The Cosmic Distance Ladder

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Astronomy · L3 · The Cosmic Distance Ladder

Quiz5 questions

In the giant-impact hypothesis, what is 'Theia'?

AThe name of the debris disk that formed the MoonBA Mars-sized protoplanet that collided with the young EarthCAn alternative name for the Moon itselfDA hypothetical planet beyond Neptune

Astronomy