Ferramentas

ASTRONOMIA

Calculadoras

• Conversion Calculator - NELM (V) to MPSAS (B) systems
• Earth Impact Effects Program
• Impact: Earth!
• Oceanografia (Puertos del Estado)
• Tabla de mareas

Efemérides

Chuvas de meteoros

• FLUXTIMATOR - NASA
• IMO Meteor Shower Calendar
• Major Meteor Showers
• Red de Investigación sobre bólidos y meteoritos

Eclipses

• Eclipses Online Portal (HM Nautical Almanac Office)
• NASA Eclipse Web Site (by Fred Espenak)

Gerais

• NeoProgrammics
• VO Solar System Portal
• USNO Data Services

Satélites artificiais

• Real Time Satellite Tracking
• Space Track

Sistema Solar

• Astronomical Sky Calendar (by Brian Casey)
• Aurora Sky Station
• Heavens-Above
• JPL Solar System Dynamics
• Moon Phase and Libration, 2017 (NASA)
• Solar Cycle Prediction (NASA/Marshall Space Flight Center)
• Space Weather Prediction Center (SWPC)

Mapas

Celestes

• Skymaps.info
• The Evening Sky Map
• Your Sky

Terrestres

• Earth and Moon Viewer
• iTouch Map (Latitude e longitude de um ponto)

Tempo

• Hora atual (LNE-SYRTE)
• StarDate Online
• The ISO 8601 Date Format (by Markus Kuhn)
• The World Clock - Time Zones

Utilidades

• ASTRONET (Carl Koppeschaar)
• Astronomy Tools
• Astronomy Workshop Tools

FíSICA E MATEMÁTICAS

• Conversion of units (FU-Berlin)
• Web Elements
• Wolfram Mathematica Online Integrator

GEODESIA

• Earth Gravitational Model 2008 - EMG2008 (National Geospatial-Intelligence Agency)
• Earth Orientation Centre (EOP)
• European Terrestrial Reference System 89 (ETRS89)
• Geographiclib (Online geodesic calculations)
• Geoscience Australia (Geodetic online calculations)
• Google Earth
• IERS Rapid Service/Prediction Center
• International Centre for Global Earth Models (ICGEM)
• International Geoid Service (IGeS - IAG)
• National Centers for Environmental Information (NOAA)
• Planiglobe
• Terramotos nos últimos dias (IGN)
• UNAVCO
• Geodesia (IGN)
• Visor Iberpix (IGN)

INFORMÁTICA

• A não tão pequena introdução ao LaTeX
• Online Broken Link Checker
• StatCounter
• WikiHow
• W3C Markup Validation Service
• Zonas wifi