Either by actually seeing it with telescopes, or by seeing the effect that it's gravity has on nearby objects.
Yes, Sirius is a binary star system composed of two stars, Sirius A and Sirius B. As of now, there have been no confirmed exoplanets detected in orbit around either star.
I am only going to tell you one because I cant think of another. Christopher Columbus Didn't Discover America.
Yes, with sensitive instrumentation, almost two thousand planets outside the solar system (exoplanets) have been discovered - and even the first ones in another galaxy. (Note, the human eye cannot see exoplanets unassisted).
No ---two ways AROUND it No two ways about it
He didn't discover any continents, but an island in the Bahamas.
A scientist and explorer can DISCOVER but a scientist can DISCOVER and INVENT
The Discover Mills mall in Georgia gets its name from the two companies that own it. The two companies that have naming rights are Discover Card and the Mills Corporation.
Two of them in this solar system; Mercury and Venus. Now that a few dozen exoplanets (planets that orbit other stars) have been identified, we're going to have to start being specific about which solar system we mean. Right now, we know next-to-nothing about those exoplanets; only that they exist.
Two ways are sexual and asexual.
vbhdlfe
with two rocks
A dumb butthead