Space Telescopes
Did You Know?
Hubble Telescope launched in 1990 and is still working!
Iconic Missions
Iconic Missions
📚Quick Glossary
Nebula
A cloud of gas and dust in space, where stars are born
Galaxy
A massive system of stars, gas, dust, and dark matter held together by gravity
Light-year
The distance light travels in one year, about 9.46 trillion kilometers
Black Hole
A region of space where gravity is so strong that nothing can escape
Supernova
The explosive death of a massive star
Exoplanet
A planet that orbits a star outside our solar system
Quasar
The brightest objects in the universe, powered by supermassive black holes
Event Horizon
The boundary around a black hole beyond which nothing can escape
Dark Matter
Invisible matter that makes up about 27% of the universe
Redshift
The increase in wavelength of light from distant objects, indicating they are moving away
✨Did You Know?
Light travels at 299,792 km/s - fast enough to circle Earth 7.5 times in one second!
The universe is 13.8 billion years old - and we can see galaxies from its first billion years
Distance to Moon: 384,400 km | Distance to Sun: 150 million km | Distance to nearest star: 4.24 light-years
JWST can detect the heat signature of a bumblebee on the Moon from Earth
One day on Venus = 243 Earth days (longer than its year!)
Jupiter's Great Red Spot is a storm larger than Earth that has raged for 400+ years
A neutron star is so dense that a teaspoon would weigh 6 billion tons on Earth
The Sun produces more energy in one second than humanity has used throughout all history
Only 12 humans have ever walked on the Moon, all during Apollo missions (1969-1972)
The Andromeda Galaxy will collide with the Milky Way in about 4.5 billion years
Black holes can have event horizons where time and space swap roles
Supernovae create most heavy elements in the universe, including gold and iron
📅Historical Milestones
The Big Bang
The universe begins - all matter, energy, space, and time emerge from a singularity
Recombination Era
Atoms form for the first time, universe becomes transparent, cosmic microwave background is released
First Stars Form
The Dark Ages end as the first stars begin to shine, reionizing the universe
First Galaxies
The first galaxies begin to form from collapsing clouds of gas and dark matter
Solar System Forms
Our Sun and planets form from a collapsing cloud of gas and dust
Life on Earth
First evidence of life appears on Earth in the form of simple microorganisms
Space Age Begins
Sputnik 1, the first artificial satellite, launches, marking humanity's entry into space
First Human in Space
Yuri Gagarin becomes the first human to orbit Earth, completing one full orbit
Moon Landing
Apollo 11 lands on the Moon - Neil Armstrong and Buzz Aldrin become the first humans to walk on another world
Hubble Space Telescope
Hubble launches, revolutionizing astronomy and providing stunning images of the cosmos
Gravitational Waves Detected
LIGO makes first direct detection of gravitational waves from merging black holes, confirming Einstein's prediction
First Black Hole Image
Event Horizon Telescope captures first image of a black hole's event horizon in galaxy M87
James Webb Space Telescope
JWST launches, the most powerful space telescope, designed to see the universe's first light and earliest galaxies
Reionization Complete
The epoch of reionization ends as most of the universe's hydrogen becomes ionized by early galaxies and quasars
Peak Star Formation
The universe reaches its peak rate of star formation, with most stars forming during this cosmic noon era
Hubble Space Telescope
The eye that revolutionized our view of the cosmos
Launched in 1990, Hubble has made over 1.5 million observations and helped determine the universe is 13.8 billion years old.
The Hubble Space Telescope was launched in 1990 and is one of the most famous telescopes in history. Despite initial optics problems, Hubble became a revolutionary tool that changed our understanding of the universe.
Visible light and ultraviolet radiation
Pillars of Creation, Hubble Deep Field, Crab Nebula
- First large space telescope
- More than 1.5 million observations
- Helped determine the age of the universe: 13.8 billion years
- Discovered that the universe's expansion is accelerating
Featured Missions
Hubble Space Telescope
Revolutionized our understanding of the universe with stunning images and groundbreaking discoveries about galaxies, stars, and planets.
James Webb Space Telescope
Peering into the cosmic dawn, revealing the universe's first light
Can detect the heat signature of a bumblebee on the Moon from Earth. Its 6.5-meter mirror is 6 times larger than Hubble's.
The James Webb Space Telescope (JWST) is the most powerful space telescope, launched in 2021. It observes the universe in infrared, allowing it to see the first galaxies and exoplanets.
Infrared radiation (0.6-28 micrometers)
First deep field, Carina Nebula, Neptune's rings
- 6.5-meter diameter mirror (6 times larger than Hubble)
- Can see galaxies from 13 billion years ago
- Studies exoplanet atmospheres
- Searches for signs of life in the universe
Featured Missions
James Webb Space Telescope
The most powerful space telescope ever built, revealing the early universe and studying exoplanet atmospheres.
Event Horizon Telescope (EHT)
The world as one giant eye, capturing the impossible
The Event Horizon Telescope is not a single telescope, but a network of radio telescopes around the world working together as one Earth-sized telescope!
Radio waves (1.3 mm)
First black hole image (M87*)
- First direct image of a black hole (2019)
- Network of 8 telescopes around the world
- Resolution equivalent to seeing an orange on the Moon from Earth
- Confirmed Einstein's theory of general relativity
ALMA - Atacama Large Millimeter Array
66 eyes watching the birth of stars and planets
ALMA is the world's largest ground-based astronomy project, consisting of 66 radio antennas in the Atacama Desert in Chile.
Radio waves (0.3-9.6 mm)
Star formation, planetary disks, distant galaxies
- 66 radio antennas working together
- Studies cold gas and dust in the universe
- Observes star and planet formation
- Located in Atacama - one of the driest places on Earth
Future Telescopes
The next generation of cosmic visionaries
Upcoming telescopes will open new frontiers in exploring the universe:
- Nancy Grace Roman Space Telescope: Will search for exoplanets and dark energy
- LUVOIR: Massive telescope that can see signs of life on exoplanets
- Thirty Meter Telescope: Large ground-based telescope with a 30-meter mirror
- Square Kilometre Array: World's largest radio telescope
