On this date in 1970, Nikolai Kamanin, head of the Soviet Cosmonaut Corps, writes in his diary that he had another run in with Valentina ...
On this date in 1930, Clyde Tombaugh, a young astronomer from Kansas, discovered Pluto. Although Tombaugh had no formal education, he wa ...
On this date in 2005, the spacecraft Cassini performed its first successful flyby of Saturn's moon Enceladus. Enceladus has an icy crust ...
On this date in 1948, Dutch astronomer Gerard Kuiper discovered Uranus' moon Miranda. Miranda is covered in a series of complex fault sc ...
On this date in 2005, the spacecraft Cassini successfully completed a flyby of Saturn's moon Titan. Prior to the Cassini-Huygens mission ...
Stars run on a process called nuclear fusion, where elements such as hydrogen and helium are fused together under immense heat and press ...
During the winter months, the constellation Taurus the Bull can be found overhead after dark. Between the horns of the bull is M1, also ...
On this date in 2001, the Near-Earth Asteroid Rendezvous (NEAR) spacecraft landed on the asteroid Eros almost 1 year to the day of enter ...
On this date in 1961, a voice message was sent from Washington D.C. to Woomera, Australia via the moon. NASA Deputy Administrator Dryden ...
On this date in 1960, Peggy Annette Whitson, American biochemist and astronaut, was born. She was the first female commander of the Inte ...
The gas giant planet Neptune hosts a moon named Triton. This is the largest moon of Neptune, but it has the unusual characteristic of or ...
The Kuiper Belt is a region that extends beyond the orbit of Neptune and is believed to contain at least hundreds of thousands if not mi ...
In February 1968, Jocelyn Bell Burnell and her advisor Anthony Hewish published their discovery of pulsars. A pulsar is a quickly spinni ...
Uranus' moon Miranda is home to a series of massive fault canyons which are some of the largest in the solar system. Some reach depths 1 ...
On this date in 1966, the uncrewed Soviet probe Luna 9 became the first man-made object to make a soft landing on the Moon. Although the ...
This month begins with a new moon, illuminated by only about 0.5 percent this morning. This is the beginning of a new lunar cycle, which ...
On this date in 1971, Apollo 14 launched from Kennedy Space Center with a crew of Alan B. Shepard, Jr., Stuart A. Roosa, and Edgar D. Mi ...
Although the moon's orbit around Earth is nearly circular, when in fact it is an ellipse. This means that, although the average distance ...
If you're up early this morning at about 5:45 am, Venus, Mars, and a waning crescent moon are all visible in the southeastern sky. The m ...
At any point throughout the year it is possible to find the North Star, Polaris in the same location in our northern sky. Unlike other s ...
On this date in 2004, the Opportunity rover successfully landed on the surface of Mars. Although this rover was only designed to last ap ...
On this date in 1986, Voyager 2 successfully completed a flyby of Uranus at 9:59 PST where it came within 50,600 miles of the uppermost ...
The moon is the only celestial body other than Earth that humans have stepped foot on. To this day, only 12 people have walked on the mo ...
On this date in 2003, NASA received the last signal from Pioneer 10. This was the first space probe to explore beyond the asteroid belt, ...
The closest star to us is Proxima Centauri, which is approximately 4.37 light years away from the Sun and hosts two known exoplanets. Wi ...
On this date in 2006, the New Horizons spacecraft was launched, with the primary objective to explore Pluto and its moons. New Horizons ...
The Sun goes through solar cycles that last 11 years. During these cycles, activity on the sun increases as it heads towards solar maxim ...
At 8:30 pm, the constellation Orion should be clearly visible in the southeastern sky. This constellation hosts the Orion Nebula, which ...
The moon is host to bright, sinuous patterns called lunar swirls. The formation of these swirls is not understood; however, NASA is send ...
Astronomy flourished during the Golden Age of Islam from the 8th century to the 13th century. As such, many common star names have their ...
Tonight the moon exhibits a waxing gibbous phase as it makes its way towards full moon over the coming nights. At 8 pm, the moon will be ...
On this date in 1990, astronauts aboard the space shuttle mission STS-32 were woken up using the song Attack of the Killer Tomatoes. Thi ...
On this date in 1787, only 6 years after his discovery of Uranus, William Herschel discovered Uranus' largest moons Titania and Oberon. ...
Mercury and Venus are both considered inferior planets, which means they orbit closer to the Sun than the Earth. Due to this, both plane ...
Tonight the moon will be in a waxing crescent phase. It will be clearly visible in the southwest around 8 pm. If you have an unobstructe ...
Galileo Galilei discovered four moons of Jupiter on this date in 1610. This is one of the most significant discoveries ever made with a ...
A waxing crescent moon can be found in the southwest after sunset. About 23% of the lunar disk will be illuminated.
On this date in 1972, President Richard Nixon signed a bill that marked the start of the space shuttle program. In total, five different ...
Today, the Earth reaches perihelion. This is when we are closest to the Sun. Earth is at its greatest distance from the Sun in July. Thi ...