The Hubble Space Telescope launched from Launch Pad 39B at Kennedy Space Center, Florida, at 12:33:51 UTC on 24 April 1990, which was 8:33 in the morning local time. That moment gives a Taurus Sun, an Aries Moon and Gemini rising, with Venus and Mars in Pisces high in the sky.
Gemini was rising at 3° when Hubble launched, the sign of curiosity, keen eyes and sharing what you find. It's an apt sign for the horizon of a telescope's chart, light and endlessly interested. Mars in Pisces, up in the 10th house, makes a square to that rising degree, giving the curiosity some push.
The Sun sat at 4° Taurus in the 12th house of Hubble's chart, just above the eastern horizon in the morning sky. Taurus is the sign of patience and durability, of things made well and kept a long time. The 12th house is the quiet, behind-the-scenes part of a chart. Mercury was in Taurus too, retrograde, which is traditionally a time for a second, closer look. It squares the Midheaven exactly and sits opposite Pluto, under a degree away.
The Moon was at 24° Aries in the 11th house of this chart, the house of hopes, shared goals and the future. Saturn, Uranus and Neptune were all in Capricorn, joining structure, invention and vision in one sign. Venus in Pisces makes a trine to Pluto, and the Sun makes easy sextiles to Mars and to Jupiter in Cancer.