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 Sun's Over Earth

Sun's Position Over Earth
(to update, reload page)
Courtesy: Fourmilab Switzerland

Day & Night on Earth
View Earth's Night Half
Sunrise & Sunset on Earth
Six Current Views of Earth Current Global Cloud-Cover
Current Global Weather
Current Planet Locations


Earth's 12-Month Heartbeat


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Sky-Gifts.  Your support is greatly appreciated!

UPCOMING

Comets:

      Visible in N Hemisphere
      Visible in S Hemisphere

Eclipses:

     NASA:

          Lunar:  2017 Aug 7
          Solar:  2017 Aug 21
                GIF Map only
                Animation only
          5 Millenia:  Solar  Lunar

     HMNAO:

          Lunar:  2017 Aug 7
          Solar:  2017 Aug 21
          600 Years of Eclipses

Lunar Occultations

Planet Conjunctions:   List

Meteor Showers:

    IMO:   Calendar   PDF
    AMS:   Calendar

NEO Close Approaches

Satellite Launches:

     NASA   SpaceX   ESA

Space-Junk Reentries (pred.)

Transits:

     Mercury:  2019 Nov 11

     Venus:   2117 Dec 10-11

SKY VIEWING
SOLAR SYSTEM
THE SUN
MERCURY
VENUS
EARTH
THE MOON
MARS
JUPITER
SATURN
URANUS
NEPTUNE
SMALLER WORLDS
STELLAR OBJECTS
EXOPLANETS
DEEP-SKY OBJECTS
SCALE OF THE COSMOS
———————
SKY-FUN / SKY-GAMES


USEFUL ASTRONOMY WEBTOOLS

USNO:

     Julian Date Converter
     Sun/Moon Data, 1 Day
     Sun/Moon Rise/Set, 1Yr

Sol-Sys Distance Calculator

Astronomical Lexicons:

     Astron. Almanac Gloss.

     NASA / JPL:

          Basics of Space Flight
          DAWN Dictionary
          HubbleSite Ref. Desk
          Imagine the Universe!
          NED (quite extensive)

     ESA:

          Science Glossary
          Space Science

List of Constellations (with pronunciations):

     IAU
     Wikipedia
     RASC

List of Brightest Stars

List of Named Stars

List of Nearest Stars


EXCITING NEW SCRIPTS COMING SOON!

Moon-Pak 1 and Planet-Pak 1 will soon bring the Moon and the planets to CELESTIA users in ways they've never seen before!  And the Paks are "awesome"!  Keep an eye out for them!


LUNAR APOGEES & PERIGEES

Lunar apogees & perigees show just how irregular the lunar orbit is.  From 1500 to 2500 CE, the Moon's apogee averages about 405,400 km, varying from about 404,050 km to its extreme maximum of about 406,720 km. The lunar perigee is much more variable however, averaging close to 363,400 km while varying from about 370,350 km to its extreme minimum of about 356,370 km!

Extreme lunar apogees and perigees are caused mostly by the Sun's gravitational pull on the Moon, and they tend to happen in the winter months of the Northern Hemisphere.  This is when Earth is near perihelion, i.e. closest (yes, closest!) to the Sun.  Extreme apogees tend to happen when the Moon is New, since the Sun pulls it "away from" Earth.  Extreme perigees in contrast tend to occur when the Moon is Full, as the Sun pulls it "toward" Earth.  Forecasting these extremes can be important due to the Moon's influence on Earth's tides.


UTC: CELESTIA'S DISPLAY OF TIME

CELESTIA's clock displays Coordinated Universal Time, UTC.  Click here for a brief explanation.


EARTH AT PERIHELION

When is Earth at perihelion, the point in its orbit closest to the Sun?  Contrary to popular belief, this happens in the Northern Hemisphere's winter NOT summer!  The winter season is not caused by Earth being farthest from the Sun, but rather by Earth's changing tilt in its orbit relative to the Sun!

In contemporary times Earth generally passes through perihelion between January 1 and January 6.  In 2014, it occured on January 4 at 12 hour UT (Universal Time).


HIGHLIGHTS OF SOME
PAST SKY EVENTS


Moon 2014

Hybrid
Solar Eclipse 2013 Nov

Perseid Meteor Shower 2013 Aug

Geminid Meteor Shower 2012 Dec

Total
Solar Eclipse 2012 Nov

Total Lunar Eclipse 2011 Jun

Total Lunar Eclipse 2010 Dec

Geminid Meteor Shower 2010 Dec

Moon Occults Venus 2010 Sep

Perseid Meteor Shower 2010 Aug

Total
Solar Eclipse 2010 July

Partial Lunar Eclipse 2010 Jun

Moon Occults Venus 2010 May

Comet ISON 2013-2014:

NASA's Comet ISON page

ISON's Journey in 3-D! (Requ.  WebGL  browser)

Download a  Paper Model of ISON's Orbit


SOME OLD-FORMAT MONTHLY NEWS PAGES

Though they feature events over a year old, here are our old-format monthly NEWS pages that you might enjoy.

2010:  Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec 

2011:  Jan  Feb  Mar  Apr  May  Jun 


Sky Events 2013  page.

Sky Events 2014  page.

Sky Events 2015  page.

Sky Events 2016  page.


NEW "SKY-GIFTS" PAGE!

Check out our exciting new  Sky-Gifts  page to learn how you may obtain beautiful downloadable high-resolution astronomy posters and more!  They make wonderful gifts for the holidays or birthdays!

2017 HIGHLIGHTS

BEST ECLIPSE IN U.S. HISTORY!

That's what the Total Solar Eclipse of 21 August 2017 is being called.  On that Monday the Moon's shadow will whisk across the United States, gracing it with a sky marvel you won't want to miss!   NASA Page   PDF Map SDO Event Page   HMNAO Page   HMNAO Visibility Tool

Awesome animations from NASA Goddard's SVS:

Path:  (webm)  (mp4)   Visibility:  (webm)  (mp4)  
Eclipse Cone:  (webm)  (mp4)  
Orbit:  (webm)  (mp4)   Oblique  (webm)  (mp4)  

Best 'eyeball' Conjunctions:

    Mercury-Mars (separation 0.05°) : 2017 Sep 16
    Venus-Mars (separation 0.22°) : 2017 Oct 5
    Venus-Jupiter (separation 0.28°) : 2017 Nov 13

Geminid Meteor Shower: 2017 Dec 13-14

SKY EVENTS 2017

Current Global Weather

You might want to start with  Tonight's Sky Maps  and the USNO's  The Sky This Week.  In addition, check out today's  Sunrise, Sunset, Moonrise, Moonset!

Moon Phases:               Today's
      Calendars:    This Month's   This Year's
      List:   This Year's

MOON PHASES 2017
video credit: NASA's Scientific Visualization Studio

NOTES:

  1.   New Moons essentially rise and set with the Sun and reflect no sunlight toward Earth, so they allow Deep Sky Observing all night.
  2.   1st Qtr Moons generally rise near "local noon" and set near "local midnight", allowing Deep Sky Observing only during the last half of the night.
  3.   Full Moons generally rise near sunset and set near sunrise, allowing no Deep Sky Observing all night.
  4.   Last Qtr Moons generally rise near "local midnight" and set near "local noon", allowing Deep Sky Observing only during the first half of the night.


ECLIPSES OF 2017 (enter year)

2017's Eclipse "Seasons":
        early thru late Feb; early thru late Aug


CURRENT YEAR'S GREATEST ELONGATIONS
Mercury      Venus

NEXT TRANSITS: MERCURY & VENUS
Mercury:  2019 Nov 11      Venus  2117 Dec 10-11


Detailed NASA / JPL SPACE CALENDAR

This includes a lot of info on the major planets, dwarf planets, asteroids, KBO's, comets, eclipses, the Moon's occultations and more.


THE MOON

Moon's Current Distance, Apparent Size and Phase
Moon's Current Location in its Phase Cycle

View the Moon's Features  that are visible from Earth with binoculars or a low-power telescope.

To help you with you lunar observations, download these classic maps of the Moon:

USAF Lunar Earthside Hemisphere Map:
Download (hi-res JP2)    View Now (smaller version)

NASA Apollo-Era Lunar Chart:
Download (hi-res JP2)    View Now (smaller version)

Here is a great  Calendar of 2017's Moon Phases & Events  courtesy of  Newcastle Observatory.
Newcastle's Previous Moon Phase Calendars: 
2016    2015    2014    2013    2012    2011    2010    2009    2008   

Old Format Previous Months' Phase Calendars:
2014:  Jan      2013:  Dec    Nov    Oct    Sep    Aug    Jul    Jun    May    Apr    Mar    Feb   


CURRENT AURORA FORCASTS

      OVATION Forecast:
                  Northern Lights: Aurora Borealis
                  Southern Lights: Aurora Australis


Image credit: NOAA / NWS Space Weather Prediction Center


EARTH'S CURRENT TILT
RELATIVE TO THE SUN

Though its two principal views display Earth rotating at different speeds, this Flash tool (in Dutch) lets you  Easily Find Earth's Current Tilt Relative to the Sun.  Moreover you can change just a few Settings to view how Earth's varying tilt throughout the year causes the seasons and affects the lengths of our days and nights.  Changing the month is most instructive.  (Note: in this animation the Vernal Equinox is essentially toward the bottom of your screen in its Northern Hemisphere view and outward toward you in its Oblique view.)


EQUINOXES & SOLSTICES THROUGH MARCH 2014


WHERE IS THE SUN TODAY
ALONG THE ZODIAC?

Here's a nice interactive Flash demo showing the  Sun's Location Along the Zodiac at Various Times of Year.  Drag its red pointer right and left over the names of the months.  You can also drag the Zodiac itself.


HOW FAR NORTH OR SOUTH WILL
THE SUN RISE AND SET TODAY?

Here's a nice interactive Flash demo showing the  How Far North and South the Sun Rises and Sets at Various Times of Year.


LATEST MAJOR SOLAR ACTIVITY
VISIBLE FROM EARTH

Sunspots      Prominences, Flares, etc.

W A R N I N G !   It is never safe to look directly at the real Sun with the naked eye!  Moreover, looking at it through a telescope or binoculars without adequate safeguards—even for an instant—can cause permanent blindness!  NEVER DO IT!  To learn how to safely "observe" the real Sun, consult the professionals at your local planetarium or observatory.


GET THE LATEST AWESOME SATELLITE
VIEWS OF THE SUN WITH "HELIOVIEWER"

HelioViewer  might just be the best free solar astronomy tool on the web, giving you access to countless actual photos of the Sun from multiple satellites!  "Time-step" through photos, and save and even make movies of what you find!  This free web-tool is not to be missed.

Here's an example  movie that SkyMarvels made using HelioViewer.  It shows some incredible solar prominence activity on New Year's Eve and New Year's Day!

And to help get you started, here's the direct link to the HelioViewer User Guide.

W A R N I N G !   It is never safe to look directly at the real Sun with the naked eye!  Moreover, looking at it through a telescope or binoculars without adequate safeguards—even for an instant—can cause permanent blindness!  NEVER DO IT!  To learn how to safely "observe" the real Sun, consult the professionals at your local planetarium or observatory.


CURRENT SUN AND MAJOR PLANET
VIEWS AND CONDITIONS FROM EARTH

Distances, Apparent Sizes, Phases, Moon Locations
Sun      Mercury      Venus      Mars
Jupiter      Saturn      Uranus      Neptune

Locations Among the Constellations (w/ Geo-Coords)
Sun      Mercury      Venus      Mars
Jupiter      Saturn      Uranus      Neptune


SOLAR SYSTEM VISUALIZATIONS

Note that the next three visualizations are oriented differently from each other.  So the Vernal Equinox is in a different direction in each.

Current Locations of the Planets in their Orbits  This SkyMarvels™ visualization shows the Vernal Equinox to the right, i.e. in the 3 o'clock direction.

The Solar System in 3-D  This third-party visualization "opens" with the Vernal Equinox "obliquely upward", i.e. essentially in the 12 o'clock midnight direction.

Solar System Orrery  This third-party visualization shows the Vernal Equinox to the left, i.e. in the 9 o'clock direction.


MERCURY'S & VENUS'S SKY PATHS 2013–2014

MERCURY MESSENGER status (completed mission with impact on Mercury as expected 2015 Apr 30)


MARS'S SKY PATH 2013-2014

View NASA's awesome  Mars Exploration  site.

MARS CURIOSITY Location

MARS SPIRIT and OPPORTUNITY Locations


JUPITER'S SKY PATH 2013–2014

JUPITER JUNO Location


SATURN'S SKY PATH 2013–2014

SATURN CASSINI Location


CLIMATIC VS. ASTRONOMICAL SEASONS

Most school children know that the climatic seasons of the two hemispheres are the reverse of each other's.  For example, when it is Summer in the Northern Hemisphere, climatically-speaking it is Winter in the Southern Hemisphere.

Nonetheless the "astronomical" seasons, as well as their respective equinoxes and solstices, have always traditionally been named for the "climatic" seasons of the Northern Hemisphere—no doubt because roughly 90% of the human population lives north of Earth's equator!  So the Summer Solstice, for instance, is the solstice in June at the beginning of the Northern Hemisphere's summer, etc.

Unfortunately, this traditional naming convention does create a potential ambiguity.  For example, for Southern Hemisphere astronomers the "traditional" Summer Solstice occurs at the start of their climatic Winter!

This is why we often now see the less traditional (though slightly less recognizable) terms: March Equinox, June Solstice, September Equinox and December Solstice.  Because these terms are more precise, they are increasingly becoming accepted as the best ways to refer to the equinoxes and solstices.

This shows Earth's snow and ice cover through the seasons  Earth's 12-Month Heartbeat


HOW LONG IS EACH SEASON?

Since their beginnings and ends are explicitly defined by the Sun's arrival at the equinoxes and the solstices in our sky, Earth's astronomical seasons have precise durations.  Moreover, though the equinoxes and solstices are equally spaced at 90-degree intervals around the Celestial Sphere, the astronomical seasons are not of equal length!  This is because Earth's changing velocity in its elliptical orbit makes the Sun appear to arrive a little early at parts of the Celestial Sphere, and a little late at others.  The lengths of the astronomical seasons are very close to the following:

Spring: 92 3/4 days
Summer: 93 2/3 days
Autumn: 89 5/6 days
Winter: 89 days.


HALF OF EARTH IN SUNLIGHT & DARKNESS

During your voyages in CELESTIA, would you like to be able to position yourself directly over the center of the half of Earth in sunlight or the half in darkness at any time this month?  On our  Tips  page, you'll find that it's quite easy to do so!  If you're any kind of sky watcher at all, you probably know just how helpful this can be!




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© 2007- by Gary M. Winter.  All rights reserved.

Interested in political cartoons and humor?
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GREAT AMERICAN ECLIPSE! BEST ECLIPSE IN AMERICAN HISTORY! BEST ECLIPSE IN U.S. HISTORY! BEST ECLIPSE IN US HISTORY! SkyMarvels: Your Key to the Sky and the Universe! SkyMarvels, Sky Marvels, SkyMarvels.com, SkyMarvels NEWS, SKY EVENTS NEWS, SKY NEWS, SKY EVENTS, TODAY'S LOCAL CLOUD COVER, THE SUN'S CURRENT POSITION OVER EARTH, THE MOON'S CURRENT POSITION OVER EARTH, CURRENT MOON PHASE, Current Planet Positions, Current Planet Locations, Aurora Forcast, Aurora Borealis, Northern Lights, Aurora Australis, Southern Lights, celestia4all, celestiaforall, CELESTIA, astronomy, space, simulations, animations, downloadable astronomy posters, stars, planets, Inner Planets, Outer Planets, Inferior Planets, Superior Planets, moons, asteroids, comets, Oort Cloud, galaxy, galaxies, Milky Way, Andromeda, globular clusters, binaries, quasars, black holes, supermassive black holes, telescope, telescopes, planetarium, software, freestuff, satellites, add-ons, addons, scripts, eclipses, Solar Eclipses, Lunar Eclipses, Solar Eclipse Finder, Lunar Eclipse Finder, mutual eclipses, transits, occultations, Solar System, CELES-TOOLS, celeSTARrium, CELX, CELX programming, Freebies, multiple views, atronomical unit, light year, parsec, meteors, meteor showers, Perseids, Geminids, Leonids, barycenter, time, Time Zones, tides, alignments, conjunctions, oppositions, seasons, apogees, perigees, aphelion, perihelion, Earth, Luna, Mercury, Venus, Mars, Jupiter, Galilean Moons, Io, Europa, Ganymede, Callisto, Saturn, Titan, rings, Uranus, Neptune, Triton, E-MSpectrum, electromagnetic spectrum, astronaut, equinoxes, solstices, precession, rotation, spin, inclination, tilt, Ecliptic, orbits, ellipse, parabola, hyperbola

Moon's Position Over Earth
(to update, reload page)
Courtesy: Fourmilab Switzerland


CURRENT MOON PHASE
Courtesy: USNO


   
   
   
(India)   

ALL THE LATEST

ISS (Int'l Space Station):
    Current Location


USGS's LATEST

Daily Earthquake Map


NASA's LATEST

APOD: Astro Pic of the Day

DAWN Mission Status

Earth from Space Today

Exoplanet Counts:

      Overall Count
      KEPLER's Count

HUBBLE Space Telescope:

      Observations This Week
      Daily Report
      News Release Archive

ISS (Int'l Space Station):

      Live ISS Stream
      Spot the Station

JPL News  (search or scroll down)

JUPITER JUNO Location

MARS CURIOSITY Location

MARS SPIRIT and OPPORTUNITY Locations

MERCURY MESSENGER status (completed mission with impact on Mercury as expected 2015 Apr 30)

NASA News  (search or click on More Stories at bottom)

NEW HORIZONS Location

Near-Earth Object news

PIONEER 10 & 11 Locations

SATURN CASSINI Location

Solar Images

W A R N I N G !
Never look directly at the real Sun with the naked eye!  It isn't safe!  Moreover, looking at the Sun through a telescope or binoculars without proper safeguards, even for an instant, may cause permanent blindness!  NEVER DO IT!  To learn how to safely "observe" the real Sun, consult the trained professionals at your local planetarium or observatory.

SDO (SOLAR DYNAMICS OBSERVATORY)

     Location

     Sun Activity: Today's Vids

          Sunspots
          Prominences
          AIA 171 (gold)
          AIA 193 (bronze)
          AIA 1700 (pink)
      Interactive Tool

SPITZER Location

VOYAGER 1 & 2:

      Distances     Locations


ESA's LATEST

ESA News  (search or scroll down)

ISS Location

EXOMARS Status

Where Is CASSINI Now?

ROSETTA:

      Where Is Rosetta?
      Rosetta's Journey

Track ESA Satellites


USNO's LATEST

The Sky This Week

Master Clock Time (UTC)

Leap Second Announcement

Delta T Calculation


OBSERVATORIES' LATEST

For the latest info from our favorite observatories, go to the  Observatories Listing on our Links page.


LATEST TIDE DATA

Data from  NOAA's National Ocean Service (NOS).


MISC

Major Meteorite Impacts

    (requires WebGL)


For more Climate Info, check out this nice interactive tool:  NASA's Eyes on the Earth.  (Requires: JAVA.)


Recent and Favorite News Stories Related to Astronomy and Space

ESA News  (search or scroll down)

HUBBLE News  Release Archive

JPL News  (search or scroll down)

NASA News  (search or click on More Stories at bottom)

2016 Oct 27: Catalog of Known Near-Earth Asteroids Tops 15,000!

2015 Jan 6: Join The Hunt: Become a "Disk Detective"!

2015 Jan 6: KEPLER Logs Its 1,000th Exoplanet

2015 Jan 1: Sun Begins 2015 With Huge Coronal Hole

2014 Dec 17: ROSETTA To Fly Past Comet in February

2014 Nov 14: New Map of Small Asteroid Impacts

2014 Oct 24: NASA Finds Ice Cloud Above Titan

2014 Sep 29: CASSINI Monitoring Mysterious Markings Morphing on Major Moon

2014 Aug 12: NuSTAR Bags Black Hole Blink

2014 Jul 7: Sun Sends Tsunamis Spaceward, Says VOYAGER 1

2014 Jun 12: HERSCHEL Beholds Bout of Budding Births—of Stars, That Is

2014 May 22: WISE Findings Challenge Old Theory

2014 Apr 3: Ocean Found Inside Enceladus

2014 Mar 26: NASA Searches for Seeds of Black Holes

2014 Mar 7: WISE Finds No "Planet X"

2014 Feb 26: KEPLER Mission Announces a Planet Bonanza

2014 Feb 11: 360-Degree View of Saturn's Auroras

2014 Jan 29: Solving Mystery of Burned-Out Galaxies

2014 Jan 2: First 2014 Asteroid Discovered Slams into Earth

2013 Dec 12: Chemical Surprise Found in Crab Nebula

2013 Dec 12: Hubble Sees Evidence of Water Vapor at Jupiter Moon

2013 Dec 11: Clay-Like Minerals Found on Icy Crust of Europa

2013 Dec 10: Mars Orbiter Reveals a More Dynamic Red Planet

2013 Dec 4: CASSINI Obtains Best Views of Saturn Hexagon

2013 Dec 3: Massive Black Hole Duo: Possible Sighting by WISE

2013 Nov 21: Infant Galaxies Merge Near 'Cosmic Dawn'

2013 Nov 11: SPITZER and ALMA Reveal a Star's Bubbly Birth

2013 Oct 17: Rover Confirms Martian Meteorite Origins

2013 Sep 30: CASSINI Says Saturn's Satellite Sports Space Plastic!

2013 Sep 10: SPITZER Exposes Asteroid's Secret!

2013 Sep 5: NuSTAR "Nabs" Its First 10 Supermassive Black Holes!

2013 Aug 28: SDO Surveys Circulation Inside Sun

2013 Aug 23: 2013 Sea-Ice Retreat Unlikely to Break Record

2013 Aug 15: CURIOSITY's Movie of Passing Martian Moons

2013 Aug 15: Asteroid's Radar Images

2013 Aug 1: Does Age Quell Appetites of Gargantuan Galaxies?

2013 Jul 16: Comet ISON's Potentially Perilous Solar Encounter

2013 Jul 15: HUBBLE Finds 14th Neptunian Moon

2013 Jul 8: Radio Bursts Discovered From Beyond our Galaxy

2013 Jun 24: 10,000th NEO Discovered, Oh My!

2013 Jun 11: HERSCHEL Goggles Gobs of Galactic Gas

2013 Jun 11: NUSTAR Should Spill Slumbering Structure's Secrets

2013 Jun 6: Small Asteroid Slips Safely Between Earth and Moon

2013 May 29: WISE Looks for Lost Lineages of Asteroids

2013 May 23: Galaxy Feeding Frenzy: Frigid Fuel Found to Follow Filaments

2013 May 15: Cameras Count Crater-Causing Concussions that Scar Mars

2013 May 7: HERSCHEL Hones In on Hungry Black Hole

2013 Apr 3: Stellar Confetti in the SMC?

2013 Mar 18: CHANDRA Views Supernova Remnants Discovered by Johannes Kepler in 1604

2013 Mar 11: WISE Discovers Closest Stars Found in a Century!


News:  2017

News:  2017