https://docuspeed.ai/blog.html Astronomy and spaceflight stories en Wed, 21 Oct 2026 12:22:49 GMT https://docuspeed.ai/blog/neptune/ https://docuspeed.ai/blog/neptune/ Tue, 20 Oct 2026 16:00:00 GMT In 1846 Johann Galle found Neptune in under an hour, less than 1 degree from where Le Verrier's math pointed. Newton's gravity triumphed. The later Planet X was a mistake. https://docuspeed.ai/blog/reentry/ https://docuspeed.ai/blog/reentry/ Sun, 18 Oct 2026 16:00:00 GMT At nearly 8 km/s, a capsule is heated less by friction than by air it compresses to over 10,000 K. A blunt shape, an ablative heat shield and a narrow corridor bring it home. https://docuspeed.ai/blog/sn1054-crab-nebula/ https://docuspeed.ai/blog/sn1054-crab-nebula/ Sat, 10 Oct 2026 16:00:00 GMT In 1054, Song dynasty astronomers logged a guest star seen in daylight for 23 days. Nearly 900 years later, it was confirmed as the supernova that created the Crab Nebula. https://docuspeed.ai/blog/roche-limit/ https://docuspeed.ai/blog/roche-limit/ Mon, 05 Oct 2026 16:00:00 GMT Within about 2.2 Saturn radii, tides tear an icy moon apart and stop fragments from regrouping. Saturn's main rings end right at this line, the Roche limit. https://docuspeed.ai/blog/interstellar-visitors/ https://docuspeed.ai/blog/interstellar-visitors/ Fri, 02 Oct 2026 16:00:00 GMT Since 2017 we have confirmed three objects from other star systems: ʻOumuamua, Borisov and 3I/ATLAS. Each passed through once, too fast for the Sun to hold. https://docuspeed.ai/blog/hubble-deep-field/ https://docuspeed.ai/blog/hubble-deep-field/ Wed, 23 Sep 2026 16:00:00 GMT In December 1995, Hubble spent ten days on a seemingly blank patch of Ursa Major, taking 342 exposures. The image held about 3,000 galaxies and changed how we see galaxy evolution. https://docuspeed.ai/blog/jwst/ https://docuspeed.ai/blog/jwst/ Fri, 18 Sep 2026 16:00:00 GMT Cosmic expansion stretches the light of the earliest galaxies into the infrared. To see it, Webb carried a 6.5 m gold-coated mirror and a five-layer sunshield to Sun–Earth L2. https://docuspeed.ai/blog/deep-space-network/ https://docuspeed.ai/blog/deep-space-network/ Fri, 11 Sep 2026 16:00:00 GMT Voyager 1 transmits on about 22 watts, and its signal reaches Earth at around 10⁻¹⁸ W. Three complexes 120° apart, 70 m dishes and antenna arraying are why we can still hear it. https://docuspeed.ai/blog/phobos/ https://docuspeed.ai/blog/phobos/ Tue, 08 Sep 2026 16:00:00 GMT Phobos orbits just 6,000 km above Mars and is slowly falling toward it. Japan's MMX spacecraft launched on October 20, 2026, to bring a sample of it back in 2031. https://docuspeed.ai/blog/europa/ https://docuspeed.ai/blog/europa/ Tue, 01 Sep 2026 16:00:00 GMT Europa's surface sits near -160°C, yet under its ice there is very likely an ocean holding about twice the water of Earth's oceans. Europa Clipper reaches Jupiter in 2030.