Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Undergrad What causes Kuiper/Ort cloud objects to become comets?
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High School Rationale behind certain aspects of Space exploration
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Stargazing Assessment of astronomical numbers like those of Proxima Centauri
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High School Star Photography: Can We See Stars as Disks?
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High School Expansion of the Universe and the fourth dimension
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High School Would lightning be possible on brown dwarfs?
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Undergrad How does the perihelion passage affect the orbital period of comet Neowise?
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Undergrad Is Triton ever hidden behind Neptune?
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High School What Are the Linear Dark Features on the Sun?
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Solar System Dynamics page at NASA/JPL
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High School Are the telescopes at Mauna Kea available for anyone to use?
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Undergrad How bright of a bolide would a Saturn IV-B stage be if it hit Earth
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High School The Hubble Telescope Images a Magnificent Galaxy With “Flocculent” Spiral Arms
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Undergrad CCD Readout Noise vs Temperature
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High School Why certain stars seem to move very little in the sky
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Graduate Collision-dominated plasma (stellar coronae)
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Undergrad Observing colour through telescopes
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Undergrad Black Hole Observations: What Changed?
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High School Could a Black Hole Power Civilization?
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High School How to prepare my camera for a solar eclipse
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Insights 3 Possible Models For Why Uranus Spins on Its Side
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Undergrad Do more impact craters always signify old age of a surface?
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Undergrad Formula: velocity of circular orbit wrt Schwartzschild metric
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Undergrad Possible webpage title: Is There an Upper Limit to the Size of a Black Hole?
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Undergrad X-ray Astronomy: Charged Ions Energy Distribution
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Stargazing Does anyone know where Earth's gravity stops and space begins?
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Undergrad Answers to a question about extraterrestrial life
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Undergrad Foreground & Background in Astrophysical Observation
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High School Consequences of the Existence of Gravitational Waves?
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High School An objective Bayesian analysis of life’s early start & late arrival
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Undergrad Persistent features of astronomical bodies
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Undergrad A cold, massive, rotating disk galaxy 1.5 billion years after the BB
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Undergrad Power output of red dwarfs turning yellow and blue?
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High School Feasibility of Yuri Milner's Breakthrough Starshot
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Undergrad What is column density in astronomy?
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Undergrad Question regarding the future of galaxies within a group of clusters
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Stargazing Backyard astronomers, how do you decide what to look at?
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High School Behavior of compasses AFTER the magnetic pole
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High School Discover the Black Hole Growth Rate: Time Frame for Consuming Planetary Mass
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Undergrad Trying to grok the draconic year
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Stargazing Wasp-76b is a planet where it rains iron
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Undergrad Could life on Earth survive the far future?
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Undergrad What stars were observed @ 1919 solar eclipse to prove relativity?
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Undergrad Black hole image: What are those "lobes"? [M87 10April2019]
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Undergrad The effect of Faraday braking on the Earth’s orbit
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Graduate Is this evidence that Venus originally had a nitrogen atmosphere?
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Undergrad IAU Rotational Models: Sol Solar System Planet Info
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Undergrad Why the center of black holes should be different from neutron stars?
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High School USGS Moon Map w/ Legend: Help Finding & Enlarging
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Undergrad White dwarf Ultra-relativistic electrons
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Undergrad Is it possible for the Moon & a pair of planets to conjunct as smiley face?
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Undergrad Suggestion for resources about cosmic rays
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Graduate Can a single star with 6 to 8 solar masses end up as a supernova 1a?
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Undergrad The Bullet Cluster: 1E0657-56 vs. 1E0657-558
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Undergrad Elliptical Orbit and Kepler's equation
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High School Free Online Lecture: Seeing the Unseeable - Capturing an Image of a Black Hole
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Graduate Elliptical orbit parameterized by time
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High School What Did Hubble See On Your Birthday?
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Stargazing Wicked pink supermoon the other night Pics
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Stargazing Personal opinions please Lunar/martian meteorites or not?
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High School What is the Cooling Time of a Neutron Star?
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Undergrad How does Jupiter protect the Earth from collision with space rocks?
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High School Neutron Star Paradox: Understanding Coulomb & Gravitational Forces
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High School Why Do We See Old Galaxies in Every Direction?
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High School Lunar Crater Radio Telescope (LCRT)
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Undergrad Simple atmospheric question re: Mars
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Undergrad Objects flying over the lunar surface
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Stargazing No, the Moon will Not be Pink Tonight
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Undergrad To collect all info at the event horizon
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High School How hard is it to detect extinct comets?
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Undergrad The life cycle of a star and the bell shaped energy emission curve
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Undergrad Velocity correction´ formula for the rotation of the Earth
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Undergrad Solar wind velocity and corrections
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Undergrad A Puzzle Regarding the Time Between Consecutive March Equinoxes
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Insights Black Holes Are Not Empty Voids
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Undergrad Uncovering the Truth: Jupiter's Core Revealed as Solid Diamond by Tammy Ma
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High School Understanding the Age of Observed Light: A Scientific Perspective
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Insights Gaia and the Race to Detect More Gravitational Waves
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High School How much in the past do we see these planets?
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Undergrad Universal interferometric signatures of a black hole’s photon ring
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High School Can Elon Musk's BFR Project Meet Its Ambitious Timeline for Mars Colonization?
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Undergrad Where exactly is the Hertzsprung Gap?
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High School Conjunction Mars, Jupiter, Saturn, Moon - March 18 + or -
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Undergrad Variations in Sun-Earth distance with a 2000-year cycle?
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Undergrad Uncovering the Mystery of Lunar Perigee Frequency | 2020 Insights
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Undergrad If humamoids lived around a flare red dwarf, would the flare kill them?
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Undergrad A new space rock to my collection
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High School High school Astrophysics Research Project Suggestions Please
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Undergrad This Wikipedia article about Scholz's Star doesn't make sense
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Stargazing Satellite grids around other planets
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Graduate Elliptical orbit and how seasons would be affected
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Stargazing Is there an official name yet for tau Ceti 'f'?
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Undergrad Asteroid Response Help: Get Answers to Your Questions Here
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Stargazing So If Something Happened In Space, Say 350 Million Years Ago....
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Undergrad What is the current understanding of supernova mechanisms in 2020?
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Undergrad Why does the Universe have so many galaxies?
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Stargazing Convert Light Years to Miles: 5.879e+12 Explanation and Conversion Guide
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High School Tau neutrino flux in IceCube data
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Undergrad Tidal forces acting on planet NGTS-10b
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Undergrad Does the expansion of the Universe heat stars and bodies?
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