Magnitude is the measure of an object's brightness in the night sky. Bright objects have low magnitudes. Because the planets reflect the sun's light, their magnitude will vary. Saturn has a maximum magnitude ar
Even though researches have detected plenty of planets orbiting other stars, half that they found are hot, A-type star are hot but B-type stars are even hotter. The A stars are the brightest stars in the sky most of the stars you know by: Sirius, Vega, Altair, etc.,” says Marc Ku...
Why is Orion called a winter constellation? What constellation does the star Sirius belong to? What constellation is the star Vega in? What is the brightest star in the Cancer constellation? What is the brightest star in the Pisces constellation?
At its closest approach, Mercury is 77.3 million km from Earth. How long would it take to send a radio message from a space probe of Mercury to Earth when the planets are at this closest distance? What is the wavelength of an electro...
Good choice on the mount and the scope (although you can get less expensive doublets--Orion sells the HEQ5 in its Sirius incarnation with an ED-80 and mounting hardware for a significant savings. The ASI183MC Pro is a good camera limited only by its small FOV. Also if you are shooting...
(though I was able to see it using a binoviewer without a GPC so there was some excessive spherical aberration in blue light and I could see the slight change of intensity around Sirius, which had a very slight pale glow around it with a denser area, which would be consistent with coma...
is magnitude -26.7. The star Sirius is magnitude -1.46. It's 70 times more luminous than the Sun, but it lies 8.6 light-years away and is slightly dimmed by distance. It's important to understand that a very bright object at a great distance can appear very dim because of its distance...
What are Alpha Centauri and Sirius? What color is the Milky Way Galaxy? What makes a red giant star so large? Why is Uranus blue? Why is the sky dark at night? When was Alpha Centauri discovered? Why does a star become a red giant? Why are the pulsar planets probably devoid of life...
The distance from the Sun to Mars is 2.279 x 108km. How long does it take for light to travel to mars? Speed Calculations: Light travels at a constant speed from one point to another. Given an amount of distance for example the distance between...
What might happen if the bright star Sirius exploded in a supernova? How long would it be before we found out that it had happened? Everyone realizes how dependent we Earthlings are on the Sun, but ho What is the twinkling effect of starligh...