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Evolution, physics, chemistry, meteorology, and motion of celestial objects, formation and development of the universe, astrophotography, astrophysics, cosmology, and astronomical instruments.

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A new interstellar object: comet C/2025 N1 (ATLAS), (a.k.a. 3I/ATLAS and A11pl3Z)

CONTRIBUTED BY: Jeffrey Bryant | 5 days ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Curated Data , Events & Media , ...
1
REPLIES
153
VIEWS

Astrolabe in 2D generating a movie of its motion

CONTRIBUTED BY: Gilmer Allen Gary | 6 days ago BY: Gilmer Allen Gary
Astronomy , Compilation , Geometry , Graphics and Visualization , ...
1
REPLIES
123
VIEWS

Astrolabe in 3D generating a movie of its construction process

CONTRIBUTED BY: Gilmer Allen Gary | 6 days ago BY: Gilmer Allen Gary
Astronomy , Physics , Presentation and Notebooks , ...
1
REPLIES
103
VIEWS

Coelostat for solar observation - equations, graphics, & 3D print model

CONTRIBUTED BY: Gilmer Allen Gary | 6 days ago BY: EDITORIAL BOARD
Staff Picks , 3D Printing , Astronomy , Geometry , ...
1
REPLIES
118
VIEWS

Modeling optimal observation points for Halley's comet via a geographic approach

CONTRIBUTED BY: Julia Gao | 7 days ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Curated Data , ...
1
REPLIES
174
VIEWS

Quadrant Astrolabe

CONTRIBUTED BY: Gilmer Allen Gary | 7 days ago
Astronomy
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REPLIES
64
VIEWS

Universal Astrolabe

CONTRIBUTED BY: Gilmer Allen Gary | 7 days ago
Astronomy , Compilation , Geometry , Mathematica , Modeling , ...
0
REPLIES
65
VIEWS

Mathematical Games 30: Measuring the Universe

CONTRIBUTED BY: Ed Pegg | 12 days ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Challenges , Demonstrations , ...
1
REPLIES
169
VIEWS

Gravitational influence of Saturn's rings on its moons: a case for free granular flow

CONTRIBUTED BY: Troy Shinbrot | 27 days ago BY: Mauricio Rojas
Staff Picks , Astronomy , Dynamic Interactivity , ...
2
REPLIES
482
VIEWS

Is Planet-9 still viable? A new trans-Neptunian object challenges the orbital bias behind the theory

CONTRIBUTED BY: Jeffrey Bryant | 1 month ago BY: Daniel Lichtblau
Staff Picks , Astronomy , Curated Data , Graphics and Visualization , ...
2
REPLIES
3.8K
VIEWS

Code taking too long time to compute

QUESTION FROM: Ananth Krishna | 1 month ago BY: Gianluca Gorni
Algebra , Astronomy , Graphics and Visualization , Mathematics , ...
1
REPLIES
602
VIEWS

Tidal effects in gravitational waves from neutron stars in scalar-tensor theories of gravity

CONTRIBUTED BY: Gastón Creci | 2 months ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Graphics and Visualization , ...
1
REPLIES
642
VIEWS

The uncontrolled re-entry of a large Soviet-era Venus probe KOSMOS-482 on May 10, 2025

CONTRIBUTED BY: Gosia Konwerska | 2 months ago BY: Jeffrey Bryant
Staff Picks , Astronomy , Curated Data , Events & Media , ...
3
REPLIES
1.8K
VIEWS

Beltane celebration, the Goseck circle and the solar calendar

CONTRIBUTED BY: Jose Martin-Garcia | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Computational Humanities , Curated Data , ...
1
REPLIES
1K
VIEWS

Mathematica Beyond Mathematics: The Wolfram Language in the Real. Supplementary material update

CONTRIBUTED BY: JOSÉ GUILLERMO SÁNCHEZ LEÓN | 3 months ago
Astronomy , Biological Sciences , Chemistry , Computer Science , ...
0
REPLIES
544
VIEWS

Resumming Post-Minkowskian and Post-Newtonian gravitational waveform expansions

CONTRIBUTED BY: Andrea Cipriani | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Mathematics , Physics , ...
1
REPLIES
760
VIEWS

From spin foams to area metric dynamics to gravitons: Hessian, Regge calculus, hypercubical lattice

CONTRIBUTED BY: Bianca Dittrich | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Algebra , Astronomy , Mathematics , Physics , ...
1
REPLIES
826
VIEWS

Astronomy with Wolfram: spooky moon calendar

CONTRIBUTED BY: Denis Ivanov | 3 months ago BY: Jeffrey Bryant
Staff Picks , Astronomy , Curated Data , Dynamic Interactivity , ...
2
REPLIES
1.3K
VIEWS

Forward ray tracing and hot spots in Kerr spacetime

CONTRIBUTED BY: Lihang Zhou | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Calculus , Graphics and Visualization , ...
1
REPLIES
10.2K
VIEWS

Graviton fluctuations in gravitational wave patterns: analysis via iterations

CONTRIBUTED BY: Noah MacKay | 3 months ago BY: EDITORIAL BOARD
Staff Picks , Astronomy , Graphics and Visualization , Modeling , ...
1
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1.1K
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301 Discussions

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ACTIVE MEMBERS ACTIVE MEMBERS

ACTIVE MEMBERS
jeffb
Jeffrey Bryant
5 days ago
gag0002
Gilmer Allen Gary
3 hours ago
gaojulia01
Julia Gao
9 days ago
edp
Ed Pegg
12 days ago
ananthkrishna2020
Ananth Krishna
20 days ago
shinbrot
Troy Shinbrot
1 month ago
gfcrecikeinbaum
Gastón Creci
2 months ago

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