Distant Suns 5 vs Astrelia

Distant Suns: The night sky, reimagined. 2013 finalist in the Family category of TabTimes' best tablet app contest; "I am putting together some mobile astronomy apps for our local "Sky's the Limit" Observatory in Twentynine Palms, CA. I have been searching for something as good as, or better than, Distant Suns. Short answer: I have not found it yet. ...nothing portrays the night sky as well as Distant Suns. Distant Suns has been your personal guide to the cosmos since 1985. First on the desktop, now right in your hands. While others play games, you can travel to the stars. Award-winning Distant Suns has the reputation of both having one of the most realistic displays of the night sky, while being one of the easiest to use astronomy apps for casual sky watchers as well as serious astronomers. •Named in the "100 Essential Apps" by iLounge •Featured on NPR's MarketPlace Features include: •No Internet required. Just a sense of wonder. •View from the Earth or out in the solar system •Simply aim and gaze. •Over 18 million pinpoint stars scintillating like diamond dust in the palm of your hand (18 mil? Yup.) •Integrated with NASA's Night Sky Network space events in your area (US only at present) •What's Up? Gives a quick one snapshot overview of the evening's sky •Realistic ghostly band of the Milky Way •Stories behind each constellation •Viewpoint Lock keeps any object centered •Current weather patterns on the earth, updated daily •Change the look of the stars •Galaxies, nebula and star clusters •Hubble Space Telescope images •All 8 planets (or 9 for you purists) •GPS aware •Special color mode preserves your night vision. •Touch the sky to reveal hidden data for each object •Planetary data and information First Light is a proud member of Moms with Apps, a collaborative group of family-friendly developers with family-friendly apps. Twitter: @distantsuns Support: www.distantsuns.com

Raise your phone toward the sky and Astrelia shows you what is actually up there: stars, planets, the Moon and the Sun, placed for your exact location and this exact instant. Tap anything and it tells you everything it knows. POINT AT THE SKY Around 8,900 naked-eye stars, sized and coloured the way the eye sees them. Constellation lines, the ecliptic with the live planets, and a Sun and Moon computed with topocentric parallax and atmospheric refraction, so they sit where you can genuinely see them. Pinch to zoom and more names appear. Tap any star to identify it. Scrub time twelve hours forward or back and watch the whole sky move. Aim at something bright and align, and the compass error that ruins most sky apps is cancelled out. TONIGHT One screen for what is happening: the Moon's phase, sunrise and sunset, which planets are up right now and which are below the horizon, meteor showers near their peak, and what is coming — eclipses, oppositions, solstices, greatest elongations. All of it searched out of the live ephemeris, not read from a hardcoded list. NUMBERS THAT MEAN SOMETHING Every object opens into real astrophysics: distance, spectral class, temperature, luminosity, derived radius, orbital elements. Next to them, plain language — the year the light you are looking at left that star, how many Suns it would take to match it, what you would weigh on that planet, where the star falls on the HR diagram, and a one-line biography of its life. Anything unfamiliar has a glossary entry a tap away. THE GALAXY MAP Leave Earth entirely and free-fly a 3D map built from real data: about 25,000 catalogued stars at their true distances, the Milky Way as its real barred spiral, and deep-sky landmarks at their real positions, distances and sizes. Twenty-seven nebulae are built from public-domain telescope photographs, so their shape and colour are the ones the telescope saw — fly into them and they hold up in three dimensions. Fly to a star and its confirmed exoplanets are there, orbiting it. At the galactic centre, Sagittarius A* is rendered by tracing light through curved spacetime: the galaxy behind it genuinely bends around it. CONSTELLATIONS All 88 IAU constellations, plus asterisms, historical figures and cultural skies, each drawn over its real stars. Open any of them in 3D and the familiar shape falls apart into deep space, because a constellation is a line of sight rather than a thing. Astrelia computes all of it on your device from catalogs that ship inside the app. No account, no subscription, no ads, no tracking, and no network needed to use it. Every dataset, algorithm and image behind it is credited in About → Sources. Astrelia has a sister app, Selenia, which reads the same real sky the astrological way.