NearLight vs Curvia

NearLight is a 3D space simulator that spans the whole journey of an astronomy fan: from a real telescope under tonight's sky to a relativistic starship and the edge of a black hole. Explore the Solar System on exact orbits, fly through 1,000 light-years of real stars, and see with your own eyes what the Lorentz factor does to time. Is your favorite sci-fi movie physically right? Check it. YOUR NIGHT SKY, TONIGHT Step onto a field on Earth and look up: the real sky for your location and moment: by GPS or from an offline catalog of 34,000 cities. Six telescopes stand ready, from a 70 mm beginner refractor to a 12-inch truss Dobsonian, with eight eyepieces, a Barlow, Moon and nebula filters (UHC, OIII), every instrument with its true magnification, field of view, image orientation and brightness. The full Messier catalog is in the sky: over 40 objects as real as astrophotographs at their exact positions and sizes, every object rebuilt from reference photos, 341,000 Tycho-2 stars deep in the field. Light pollution (Bortle scale), atmospheric seeing, twinkling, horizon extinction, even moonlight washing the galaxies out of the eyepiece, this sky behaves like the real one. A Redlight mode protects your dark adaptation. Wind the clock to August 12, 2026 and stand in Iceland or Spain: the total solar eclipse happens with true geometry, corona included. "Tonight's Sky" builds your observing plan, the "Top Objects now" wheel rolls absolute beginners to the ten best sights of the moment and all the Messier objects wait to be discovered, for good. THE SOLAR SYSTEM The Sun, all 8 planets and their major moons on ephemeris-true orbits, validated against JPL data: moon transits and shadow events at the correct times, Saturn's ring shadow, true axial tilts. Classical Spaceflight flies real missions: departure burn, coast, flip, capture burn into orbit, including Voyager-class gravity assists past Jupiter. INTERSTELLAR Search and inspect 8,000+ real stars with names, distances, stellar data, exoplanet hosts and their neighbors within 10 light-years. Plan relativistic journeys in Constant-c or Constant-g mode with acceleration, coast and braking phases. Compare Onboard Travel Time (OTT) with Earth Travel Time (ETT), read the length-contracted distance, peak speed and the energy bill (Joule, TWh, PWh or "Sun-output time"). Ride along in three cameras and near light speed the cockpit shows real relativistic optics: star aberration, Doppler colour shift and beaming. THE WHOLE MILKY WAY Pull back until the galaxy fits on screen: 100,000 light-years across, four spiral arms, the barred core: shaped from the NASA/JPL photograph down to the dust lanes and the red glow of its star-forming regions, with up to 450,000 stars drawn at once. Sol sits where it really does, 27,000 light-years out on its thin local arm. Pick any point and a route runs there from home, telling you the distance, the region you are aiming at: bulge, inner disk, rim and whether you are heading coreward or out. Then fly it, with the same relativistic clocks: a trip to the galactic centre costs a few decades on board and 27,000 years on Earth. BLACK HOLES 70+ known black holes from TON 618 to fictional Gargantua, rendered with a scientific Kerr ray tracer. Change mass and spin, sink toward the event horizon or the innermost orbit, and watch two clocks drift apart: one hour here, seven years on Earth, the Interstellar scenario, on your own screen. 6-DoF navigation: rotate, pinch-zoom, pan on every axis Auto rotation, labels, chase and cockpit cams, one-tap Reset View Ambient space music and living nightscape sounds. Native on Mac, iPad and iPhone. English and German, fully localized including VoiceOver Fully offline: no account, no tracking, and your location never leaves your device.

**Most people never get to see how beautiful mathematics really is. Curvia changes that.** Behind every equation hides a shape — glowing, breathing, impossibly intricate. Curvia lets you see those shapes, and play with them, with no math required. Drag one slider and a Fourier series draws a heart. Nudge another and a strange attractor blooms into a slow three-dimensional storm. You don't study the math here. You feel it. It's the math class you wish you'd had: not problems to solve, but wonder to fall into. **A hundred ideas of mathematics, made visible** • Curves — harmonographs, roses, spirographs, the Fourier machine that draws a heart. • Attractors & Chaos — Lorenz, Aizawa and other strange attractors, tumbling in 3D. • Fractals — Koch snowflakes, Sierpinski, dragon curves, Pythagoras trees. • Escape-Time sets — Mandelbrot, Julia, the marbled Lyapunov, and more. These aren't decorations. They're the real, famous objects of mathematics — the ones usually trapped inside textbooks — finally something you can touch. **See the formula behind the beauty** Tap once and the equation appears beneath any piece. The point isn't to teach you — it's to let you fall for the math first, through its beauty, so the symbols stop being scary and start being magic. Wonderful for the curious, for kids, and for anyone who was ever told they're "not a math person." **Made to feel effortless** • Live sliders — every move reshapes the figure instantly. • "Surprise me" — one tap reveals a whole new piece. • Hand-tuned glowing palettes. • Tap the heart to keep the ones you love. **Keep the wonder with you** Save any piece to carry a little mathematical beauty on your screen — as an image, a video, or a true live wallpaper that animates when you press your lock screen. (Live videos and live wallpapers are part of Curvia Pro, a one-time unlock.) No account. No clutter. Everything stays on your device. Math is the engine. Wonder is the product. > *Curvia isn't a math tool and it isn't a design app — it's an invitation to see that mathematics was beautiful all along.*