Early risers who look to the sky this weekend may notice two objects they don’t normally see.

That’s because Mars and Jupiter will be visible in the night sky just before dawn Friday through Monday, according to NASA.

Moreover, the two planets will appear closer to each other in what astronomers call a planetary “conjunction,” NASA reveals. “In the case of Earth’s solar system, conjunctions happen frequently because our sister planets travel around the sun in a fairly similar ecliptic plane, often appearing to meet in our night sky despite being millions of miles away from one another,” reads a statement from NASA.

The planets are expected to appear about 20 degrees above the horizon, less than one degree from each other, according to the space agency.