Space: quotes, facts and reflections - Page 2

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Follow the subject sideways.

Cards are connected by subject and by mood. Move through the complete sequence below, or cross into a neighbouring part of the archive.

16Drive

5Stillness

33Wonder

Q1845

WonderClimate

Milankovitch cycles—changes in orbital shape, axial tilt and wobble—alter the seasonal and geographic distribution of sunlight and help pace long-term glacial cycles.

Eccentricity, obliquity and precession unfold over tens to hundreds of thousands of years. Their importance lies less in changing total sunlight than in redistributing it by latitude and season, especially affecting whether northern snow survives summer. They explain ancient climate pacing; they do not explain the rapid modern warming driven by greenhouse gases.

Milankovitch cyclesRead card

Q1974

DriveSpace

As NASA's first Chief of Astronomy, Nancy Grace Roman built the agency's space-astronomy programme and became a decisive advocate for the telescope later named Hubble.

Roman entered NASA in 1959, when astronomy above the atmosphere was still an institutional possibility rather than a mature programme. She coordinated researchers, priorities and funding for orbital observatories, and steadily advanced the case for a large space telescope. Discovery depends on optics and equations, but also on the person who can keep an audacious instrument alive through years of meetings.

Nancy RomanRead card

Q1975

WonderSpace

Beatrice Tinsley built quantitative models of how stellar populations make galaxies change colour and brightness as they age, reshaping observational cosmology.

To look at a distant galaxy is to look backward in time, but comparing galaxies requires knowing how their own stars evolve. Tinsley's models followed successive generations of stars, gas and heavy elements, showing that a galaxy's light changes with age. Cosmologists could no longer treat galaxies as unchanging markers scattered through space; every marker carried an evolving past inside it.

Beatrice TinsleyRead card

Q1982

WonderSpace

Qing-era scholar Wang Zhenyi used a round table, crystal lamp and mirror to demonstrate how the Sun, Earth and Moon align during eclipses.

Wang lived only twenty-nine years, yet wrote on astronomy, mathematics and the education of women. To explain lunar eclipses, she used a round table as Earth, hung a crystal lamp as the Sun and placed a round mirror as the Moon. By arranging the three according to astronomical principles, she turned celestial geometry into a demonstration another observer could reproduce with ordinary things.

Wang Zhenyi (astronomer)Read card

Q1986

DriveSpace

Dorothy Vaughan led NACA's segregated West Area Computers, then mastered FORTRAN and prepared her colleagues for NASA's shift from human to electronic computing.

In 1949 Vaughan became NACA's first Black supervisor, managing mathematicians whose hand calculations supported aeronautical research. As electronic computers arrived, she learned FORTRAN and built programming expertise across the group, helping colleagues prepare for new roles as NASA integrated its computing divisions. She later contributed to the Scout launch vehicle. Her distinction was not personal adaptability alone; she turned foresight into collective preparation.

Dorothy VaughanRead card

Q1987

DriveBiography

Mary Jackson petitioned the City of Hampton to attend graduate courses held at a segregated white school, then became NASA's first Black woman engineer in 1958.

Jackson entered Langley's segregated West Area Computing unit in 1951, then moved into experiments in a supersonic pressure tunnel. Her training route required after-hours mathematics and physics classes in a school she was legally barred from attending without special approval. She went on to publish research on airflow and boundary layers at supersonic speeds. Later, she accepted a lower grade to manage equal-opportunity programmes, trading personal rank for the power to widen other people's routes upward.

Mary JacksonRead card

Q1989

DriveBiography

Annie Easley moved from hand calculation to programming, developing and testing code for energy systems, battery research and NASA's Centaur upper-stage rocket.

Easley joined the aircraft engine laboratory in Cleveland in 1955 as one of only four Black employees, calculating research problems by hand. As electronic computers took over, she learned FORTRAN and SOAP rather than letting automation define the edge of her career. Her code supported studies of alternative power and the liquid-hydrogen Centaur stage that sent spacecraft toward the Moon and planets. Adaptability here was not a slogan; it was a new syntax learned while the workplace itself was changing.

Annie EasleyRead card

Q1990

DriveBiography

Evelyn Boyd Granville helped formulate orbit calculations and computer procedures for Projects Vanguard and Mercury, then contributed mathematical support to Apollo-era work.

Granville earned her Yale doctorate in 1949, becoming one of the first Black women in the United States to receive a PhD in mathematics. At IBM's Vanguard Computing Center she worked where celestial mechanics met early electronic programming, translating trajectories into procedures a machine could execute during the opening years of the space age. She later returned to the classroom for a long career in mathematics education. Her work moved in both directions: equations carried vehicles upward, and teaching carried knowledge forward.

Evelyn Boyd GranvilleRead card

Q1999

WonderBiography

Annie Jump Cannon classified more than 350,000 stellar spectra and refined the O-B-A-F-G-K-M sequence that became the enduring framework of spectral classification.

At Harvard College Observatory, women hired as 'computers' read glass plates while men commonly received the titles and telescopes. Cannon pared a tangled set of spectral classes into a clear sequence based on recurring features in starlight; later work showed that her order also runs from hotter stars toward cooler ones. Her speed was legendary, but the achievement was not mere sorting. By making hundreds of thousands of observations comparable, she turned an archive into an instrument for asking how stars differ and evolve.

Annie Jump CannonRead card

Q2001

WonderScience

In a cloud chamber, ions left by a charged particle seed droplets in supersaturated vapour, turning an invisible passage into a bright, photographable track.

Charles Wilson began by studying how clouds form. Rapid expansion cooled moist air in his chamber until its vapour was ready to condense; a charged particle supplied a thread of ions on which droplets gathered. Magnetic fields bent the particles' paths; the resulting curved tracks let physicists infer charge and momentum from geometry. Cloud-chamber photographs helped reveal cosmic-ray events and the positron. The instrument did not photograph the particle itself. It photographed the atmosphere's exquisitely brief reply.

Cloud chamberRead card