(2014) are not currently available. The highest official resolution released for the series is 1080p Full HD

Streaming platforms occasionally use high-bitrate upscalers to adapt 1080p content for 4K streams, smoothing out artifacts.

Another reliable marketplace to buy and legally download the series to your Android or iOS devices for offline playback. Physical Media: The Ultimate Quality Choice

The Quest for Cosmos: A Spacetime Odyssey in 4K If you are looking to download Cosmos: A Spacetime Odyssey

Note: Always check the video badge (HD or UHD) on the storefront before purchasing to see the maximum resolution supported for your specific device. The Physical Blu-ray Alternative

The hard drive sat on the desk like a cold obsidian slab, containing 150 gigabytes of the most beautiful "nothing" ever recorded. Leo hit the ‘Play’ button.

Watching this documentary series in 4K Ultra HD completely changes the experience. The vibrant colors of distant nebulae, the sharp textures of the Ship of the Imagination, and the crisp rendering of animated historical sequences benefit massively from the extra resolution.