16 facts
When viewed from space, the Sun emits light across the entire visible spectrum, making it appear white. Its yellow appearance from Earth is due to atmospheric scattering, which removes blue light, making it seem warmer in color.
Due to the way Martian dust scatters light, the blue light penetrates the atmosphere more efficiently than other colors. This creates a striking blue hue around the setting sun, a stark contrast to Earth's familiar red sunsets.
While there's no air to transmit sound waves as we know them, space isn't a perfect vacuum. Planets, stars, and other celestial bodies emit electromagnetic vibrations that can be converted into sound, revealing a hidden symphony.
Known as Gaia BH1, it's located in the constellation Ophiuchus and is about 10 times the mass of our Sun. This discovery challenges previous assumptions about how many dormant black holes exist in our galaxy and their detectability.
Scientists estimate there are between 100 billion and 400 billion stars in our Milky Way galaxy alone, and there are billions of galaxies in the observable universe. This vastly outnumbers the estimated 7.5 x 10^18 grains of sand on all Earth's beaches.
Scientists theorize that lightning storms convert methane into soot, which then hardens into graphite and eventually diamonds as it falls through the planets' dense atmospheres. These diamonds could be massive, up to a centimeter in diameter, creating truly sparkling storms.
PSR J1719-1438 b, a planet orbiting a pulsar, is believed to be a former star whose outer layers were stripped away, leaving a super-dense core of crystallized carbon. It's roughly five times the size of Earth, truly a cosmic jewel.
Venus rotates incredibly slowly, taking about 243 Earth days to complete one rotation. However, its orbit around the Sun is much faster, completing a year in just 225 Earth days, creating this unusual celestial timing.
While the exact number of stars is unknown, current estimates suggest there are approximately 10^24 stars, far exceeding the estimated 7.5 x 10^18 grains of sand on Earth. This vastness highlights the immense scale of the cosmos.
This isn't a smell in the traditional sense, but rather the detection of ethyl formate, an ester molecule, in interstellar clouds. This same chemical compound is responsible for the characteristic aroma and flavor found in raspberries and rum here on Earth.