cosmology

The astropy.cosmology subpackage provides tools for cosmological calculations based on various cosmological models.

Skills
Scientific
0

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A skill that teaches Claude Code to do scientific tasks well. It is packaged knowledge the model uses whenever it is relevant.

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Install (Claude Code)

mkdir -p .claude/skills/cosmology && curl -fsSL https://doutorai.pt/data/lib/skills__cosmology.md -o .claude/skills/cosmology/SKILL.md

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Content

# Cosmological Calculations (astropy.cosmology)

The `astropy.cosmology` subpackage provides tools for cosmological calculations based on various cosmological models.

## Using Built-in Cosmologies

Preloaded cosmologies based on WMAP and Planck observations:

```python
from astropy.cosmology import Planck18, Planck15, Planck13
from astropy.cosmology import WMAP9, WMAP7, WMAP5
from astropy import units as u

# Use Planck 2018 cosmology
cosmo = Planck18

# Calculate distance to z=4
d = cosmo.luminosity_distance(4)
print(f"Luminosity distance at z=4: {d}")

# Age of universe at z=0
age = cosmo.a

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